At 7 weeks pregnant, your baby is growing healthy and strong – up to 13 millimeter (0.5 inches) in length from crown to rump. This is roughly the size of a macadamia nut.
The yolk sac continues to provide nutrients to your little bundle of joy, but it is starting to shrink in size. At 7 weeks pregnant, the placenta is still developing, but not mature enough to do its job. It will be another two weeks before the placenta starts to take over.
This week, your baby's vital organs continue to develop. Both hemispheres of your little Einstein's brain are growing at 7 weeks pregnant. Your baby's liver is producing red blood cells until his or her bone marrow forms and can take over this responsibility.
Your baby's facial features are becoming more prominent and if you were to peek inside your womb, you might be able to make out a mouth. The tongue is forming inside the mouth, but you can't see it yet. Your little baby has eyelid folds partially covering his or her eyes. The eye buds are maturing, and they have a retina and lens attached.
By 7 weeks pregnant, your baby's nose is in its earliest stage of development. Tiny pits have appeared on your baby's face, and these pits will eventually form the nostrils.
The umbilical cord now has four blood vessels, which transport oxygen and nutrients to and from your baby's little body.
The major muscle systems in your baby's body are developing, and his or her movements are uncoordinated right now.
Your baby has slight webbing in his or her fingers and toes. This will change in a few weeks, when his or her fingers and toes will start to separate.
At 7 weeks pregnant, you still aren't showing yet. However, you might start noticing a small pooch in your lower abdomen. This is mostly due to bloating, not your baby. (Your baby is only half an inch long at this point in fetal development!)
You may find that your favorite pair of jeans is much less comfortable during pregnancy at 7 weeks than your worn pair of baggy sweatpants. It's probably too early to start seriously thinking about maternity clothes, but it's always fun to window shop.
Fun Fact: By 7 weeks pregnant, your uterus has doubled its regular size. Your uterus (a.k.a. the womb) will continue to get larger – doubling, tripling, and quadrupling its size as the weeks pass by.
By and large, most people will not be able to detect your pregnancy at 7 weeks pregnant, and you won't start really showing until many weeks in the future. Most women don't look pregnant until at least the last week of the first trimester. (However, if you're pregnant with twins and multiples, you may start to look pregnant sooner.)
Though it may seem like an eternity waiting for changes to come, try to enjoy your smaller size while it lasts. Before you know it, your belly will be as big as a watermelon. Enjoy the next couple of weeks. You are going to miss your small size when you can no longer see your toes over your huge belly.
Although you certainly don't look pregnant, you are probably feeling quite pregnant. All your first trimester pregnancy symptoms are in full swing, and it may seem like you're never going to feel like your old self again.
Morning sickness is going strong at 7 weeks pregnant. Your nausea may be mild or severe. If you're unlucky, your queasiness comes with bouts of vomiting. (And if you're truly fortunate, you might not have any morning sickness at all. There are some women who never experience nausea or vomiting in pregnancy, and this is perfectly normal, too.)
Excessive salivation is an unheard of pregnancy symptom, but it can accompany morning sickness at 7 weeks pregnant. It can be annoying to be producing more saliva, but it's absolutely normal. This symptom is called "ptyalism," and it's very common in expecting mothers with severe morning sickness (hyperemesis gravidarum). The leading theory is that women with morning sickness try to swallow less, so they are more conscious of the saliva they are producing.
Metallic taste is a lesser-known symptom at 7 weeks pregnant. You may experience a disgusting metallic or sour taste in your mouth that lasts long after you've eaten. Although unpleasant, having a metallic taste in your mouth is absolutely normal in the first trimester. You can blame your pregnancy hormones for this symptom. Fortunately, like nausea and vomiting in pregnancy, it should go away in your second trimester.
Frequent urination is another pregnancy symptom to expect at 7 weeks pregnant. You may find that you're constantly running to the bathroom to urinate (and sometimes vomit, if you're having morning sickness). Having a frequent need to urinate is normal in the first trimester, and it's simply another side effect of all those pregnancy hormones and the fact that you have twice the amount of blood coursing through your veins. Your kidney has to work harder than ever to keep up.
Tension headaches are also a common pregnancy symptom at 7 weeks pregnant and in the first trimester. Experts aren't sure why you tend to have more headaches in pregnancy, but hormonal changes, lack of sleep, caffeine withdrawal, fatigue, and dehydration can all play a role. Fortunately, headaches tend to go away in the second trimester.
Your weight gain at 7 weeks pregnant isn’t much – roughly only one or two pounds. You don’t look pregnant yet, but some women may start to notice a little pooch in their lower abdomen. Your developing baby is still tiny (similar to the size of a macadamia nut). As your baby grows during pregnancy, you will gain weight.
Undoubtedly, you have started feeling more and more pregnant by pregnancy at 7 weeks. You are probably still experiencing morning sickness. If you are prone to migraine headaches, you may find that they are worse or better during pregnancy. While some women experience an almost complete relief of their migraine symptoms during pregnancy, others find that migraines come on with greater regularity.
Fortunately this will probably change as you follow your pregnancy week by week. Some women actually experience their first migraine during pregnancy. Migraines are generally caused by blood vessels that dilate in the brain. A migraine headache may start out like an ordinary headache, with dull pain or throbbing, but typically progresses and gets worse as time goes on. A constant pulsating sensation on one or both sides of the head is often a symptom of a migraine. Unfortunately a migraine is no ordinary headache. They are often accompanied by nausea and vomiting. Some people experience what is called an aura during a migraine. This is wavy lines, or flashing lights before their eyes.
Migraines are usually not dangerous during pregnancy. If however your migraine is accompanied by other symptoms including fever or blurred vision, you should report your symptoms to your healthcare provider immediately! Know that there are certain triggers that may impact your susceptibility to migraines. These include the following:
Stress
Lack of sleep
Chocolate
Cheeses
Wine
Coffee
Hormones
Smoke
Strong odors
While you can't control the hormonal changes that are occurring in your body, you can do some natural things to help relieve your discomfort at 7 weeks pregnant. Some women find that a cold towel or frozen bag of peas on the head helps relieve the aching associated with a migraine. Others simply prefer lying down. Meditation and yoga may actually prove beneficial during pregnancy. While it is generally considered acceptable to take Tylenol during pregnancy to help relieve pain, other forms of pain relief including ibuprofen and aspirin should be avoided.
If your headaches are truly severe, be sure to report them to your healthcare provider. There are some prescriptions that might be taken if the condition warrants it, and if the benefits of taking the medicine outweigh the risks associated with them. Know that this shall pass in time, and when you are holding your bundle of joy in your arms any discomfort that you felt in the early months will quickly be forgotten.
Many women start having cravings during pregnancy. Cravings are a perfectly natural part of pregnancy, but taken to the extreme can lead to excessive weight gain. The most die-hard vegetarians may find themselves craving steak and other meat products during pregnancy. They may also find it difficult to eat many of the things they used to love, including leafy greens. Much of this is hormone related. Cravings may also be an indication that your body is deficient in certain nutrients. You may, for example, need more calcium if you are craving products with milk in them.
It is fairly common for your taste preferences to change significantly during pregnancy. This may be a result of your body's increasing metabolic demands and needs for additional calories. Some studies show that a woman's cravings change from trimester to trimester. Some of the more commonly reported cravings include pickles and salty snacks, though fruit is actually one of the most common cravings among women. Salty cravings may indicate that you need to incorporate more sodium into your diet (though you'll definitely need to drink more water if you crave salt, because the excess salt can lead to bloating).
You may tend to gain more weight if you start eating foods that were formally 'off limits'. A vegetarian, for example, that starts indulging in T-bones and ice cream may find they gain weight more rapidly than a woman who has always eaten these things. The good news, is that you can indulge your cravings to some extent without packing on an excessive amount of weight. The key is to allow yourself small indulgences without going overboard. For example, if you have a craving for chocolate, consider having a mini chocolate bar rather than devouring the entire chocolate cake you made for your neighbor's birthday party. Incorporating many different types of food into your diet may also help combat and satisfy cravings.
Unusual and Harmful Pregnancy Cravings
Some women actually have very unusual cravings during pregnancy. Some common examples include paint chips, dirt or starch. This is actually a situation where you should not indulge your cravings and you should consult with your healthcare provider. You may have a condition known as pica. This condition is often linked to iron deficiency anemia.
Other cravings that may be harmful during pregnancy include cravings for raw products such as raw fish or eggs. Be sure you avoid during pregnancy any substances that might prove harmful for you and your baby, and you should be able to manage the cravings that accompany pregnancy beautifully.
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At 7 weeks pregnant, you still aren't showing yet. However, you might start noticing a small pooch in your lower abdomen. This is mostly due to bloating, not your baby. (Your baby is only half an inch long at this point in fetal development!) 
Although you certainly don't look pregnant, you are probably feeling quite pregnant. All your first trimester pregnancy symptoms are in full swing, and it may seem like you're never going to feel like your old self again. 
Undoubtedly, you have started feeling more and more pregnant by pregnancy at 7 weeks. You are probably still experiencing 
During pregnancy week 7, everything you place in your mouth has the potential to affect your unborn baby. Make sure you learn
Some women actually have very unusual cravings during pregnancy. Some common examples include paint chips, dirt or starch. This is actually a situation where you should not indulge your cravings and you should consult with your healthcare provider. You may have a condition known as pica. This condition is often linked to iron deficiency anemia. 