At 28 weeks pregnant, your baby measures roughly 14.8 inches from head to heel. He or she weighs in at 2.2 pounds. (Keep in mind that your individual baby's size and weight may be different than this average.)
Up until 28 weeks pregnant, your baby's brain has been smooth. This week, the brain is starting to mature and form the grooves that we normally associate with a human brain.
Your baby's hair is growing longer on his or her head, but don't expect to see a full head of hair when he or she is born. Some newborns are completely bald, and others are born with lovely locks that will fall out and even change color after delivery. Your baby's eyelashes and eyebrows are also getting thicker and they're lengthening.
Fun Fact: Between 28 and 29 weeks pregnant, the growth of twins and multiples will slow down due to the growing lack of space in their womb. But your babies will still move and kick with all their might.
The level of amniotic fluid in your womb will be reaching its maximum amount between 28 and 32 weeks of pregnancy. After 32 weeks, this amount will remain constant until your baby is full term (37 weeks), when it will begin to decrease.
This week, most babies will turn into the head-down position. However, some infants remain breech (with their bottom or feet down, head up). It may take a few extra weeks for these babies to settle into their actual labor position.
At 28 weeks pregnant, your little bundle of joy continues practicing his or her breathing movements. Up until this stage in fetal development, your little one's breathing movements have occurred randomly, but this week, they're beginning to reflect his or her sleep and wake cycle.
Your developing baby's yawning patterns are getting more regular at 28 weeks pregnant. Earlier in pregnancy, his or her yawns only occurred occasionally. This week, fetal yawns will take place in succession – one yawn, followed by another in a repetitive pattern.
At 28 weeks pregnant, your uterus measures at least 3 inches above your naval, and it is roughly 28 centimeters tall. As your pregnancy continues, your womb will keep growing, and you may feel increasingly uncomfortable.
This week, women who have tested Rh-negative will receive an injection of a substance called RhoGAM. This substance protects you from becoming sensitized should your baby's blood mix with yours. The injection will protect you throughout your pregnancy and after delivery.
Since you're officially in your third trimester, it's a good idea for you to learn about the signs of premature labor and delivery. As a rule of thumb, you should call your doctor or midwife if you start to have contractions; if you notice a change in your vaginal discharge; if you are leaking fluid or have vaginal bleeding; if you experience pelvic pressure (the feeling that your baby is pushing down); if you have a low, dull back ache; or if you experience menstrual-like cramping.
At 28 weeks pregnant, you may want to start counting your baby's kicks. Although it's not medically necessary for you to count fetal kicks (unless your midwife or doctor has advised you to), it's a good way to feel more secure in knowing your baby is healthy. In general, a healthy baby will move at least ten times within a 2-hour period.
At 28 weeks pregnant, you've reached the third trimester. In 9 to 12 weeks, you'll be welcoming the newest addition to your family, and you'll get to experience the joy and euphoria that comes with being a mother. Unfortunately, you'll be suffering many aches and pains in this last leg of pregnancy.
Shortness of breath is a common pregnancy symptom in the first trimester. At 28 weeks pregnant, as your already large uterus expands, it will start to press on your diaphragm. As a result, it may cause you to feel short of breath. This is a normal pregnancy change, and often nothing to worry about. (However, it's a good idea to bring this symptom up at your next prenatal appointment.) To get relief from shortness of breath, sit up or stand up straight. This may give your lungs extra room to expand. Sometimes, lifting your arms over your head can take the pressure away from your rib cage, giving you the ability to breathe more easily.
Helpful Tip: Always call a doctor or healthcare provider if you experience shortness of breath with heart palpitations, dizziness or fainting, chest pain, fever or chills, or blueness around your fingers, toes, or lips. This may be a sign of something serious.
Backaches will become a regular symptom at 28 weeks pregnant. Since you're toting around 20 extra pounds (on average), it's common for your back to feel achier than normal. Your heavy uterus is probably straining your lower back muscles. Plus, hormonal changes relax all your joints and ligaments, and this only contributes to back discomfort.
Fatigue often accompanies back discomfort at 28 weeks pregnant. It takes a lot of energy to carry around those extra pounds. In the final trimester, sleep disturbances (such as restless leg, frequent urination, and leg cramps) can also make you feel rundown and exhausted. Although you can't completely prevent this symptom, you may be able to cope with an afternoon power nap, or just resting whenever you can. You will start to feel better once your baby is born.
Your belly is pretty large now. Your weight gain at 28 weeks pregnant is probably 19 or 20 pounds, if you are an average-weight woman. It may feel like you're carrying a giant watermelon in your belly. Your hefty weight gain is the reason your back is probably aching at pregnancy 28 weeks!
If no one has suggested a baby shower yet, someone likely will in the next few weeks. A baby shower is a wonderful way to welcome your pending arrival and spoil yourself a little bit. Some women find themselves with not one but several offers for a baby shower. If that is the case, suggest to several of your girlfriends or family members that they work together to throw you a one of a kind baby shower. There is nothing wrong with having co-hosts or several helpers involved in a shower.
You might also think about stocking up on some supplies for the nursery at this point in time. You never know when your little one might decide to make their appearance into the world, and should they come early you don't want to find yourself completely empty handed. This is a great time to set up the nursery because you are still small enough to get around relatively easily (but remember no heavy lifting!). Some women prefer not to have a shower or set up the nursery until the baby actually arrives. This works very well too, particularly if you invite some people over to help set up the nursery while you are recuperating from delivery.
Many women decide to set up a nursery with a specific baby room idea or color scheme. One of the best parts of having a baby is deciding just how to decorate the nursery. There are literally dozens of colors, ideas, to choose from.
There are literally thousands of women who are diagnosed with asthma every year. Asthma during pregnancy can be life threatening it compromises the health and safety of the mom-to-be. If you can't breathe, then neither can your baby!
Many women are afraid of taking their asthma medications during pregnancy. However, the risks of not taking any medication for asthma during pregnancy far outweigh any potential risks to the baby.
It is important that you keep your breathing under control during pregnancy. Oxygen deficiencies in the mother can affect the baby in several ways. When asthma is controlled however during pregnancy, a woman will go on to have a normal and uncomplicated pregnancy. When asthma isn't controlled in pregnancy, it may lead to: premature birth, low birth weight babies, and blood pressure changes.
Some women will find that their asthma actually improves during pregnancy. In fact, roughly 1/3 of women notice an improvement in their asthma symptoms, while an equal number may notice it gets worse. Most medications used to control asthma are perfectly safe during pregnancy.
There are several things that pregnant women can do to control their asthma aside from taking their medications. Among these include:
Avoiding common allergy triggers.
Avoiding any other triggers.
Getting an appropriate amount of sleep.
Seeking out regular prenatal care.
Exercise lightly under the supervision of a qualified physician.
Avoiding smoke or being around people that smoke.
The influenza vaccine is safe in pregnancy. An influenza vaccine is actually recommended for patients whose asthma is triggered by viral infections.
If you have asthma, your healthcare provider will work with you during your pregnancy to ensure that you receive the best care possible given your situation. Pregnant women will be monitored using several different methods including office spirometry and assessment of peak expiratory flow rate. The goal of your prenatal care will include maintaining a normal or close to normal pulmonary function rate.
Your baby will also be closely monitored throughout your pregnancy. Your healthcare provider will use ultrasound and electronic fetal heart rate monitoring as the key instruments for assessing your baby's health and well being.
If a woman does experience an asthma attack during pregnancy, early intervention is vital to her health and well being and that of her baby. Pregnant women must seek medical treatment immediately if their medication isn't resulting in improvement or if the episode is severe. In some instances an attack may result in a decreased amount of fetal movement that should be checked out immediately.
With proper care, most women will go on to deliver without any complications. During labor and delivery, you and the baby will be carefully monitored. Pregnant women with asthma will have peak flow rate measurements taken when they are admitted to labor and delivery and every 12 hours thereafter. Use of pain medications is recommended during delivery to help limit the chances of an asthma attack during delivery.
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At 28 weeks pregnant, your uterus measures at least 3 inches above your naval, and it is roughly 28 centimeters tall. As your pregnancy continues, your womb will keep growing, and you may feel increasingly uncomfortable. 
At 28 weeks pregnant, you've reached the third trimester. In 9 to 12 weeks, you'll be welcoming the newest addition to your family, and you'll get to experience the joy and euphoria that comes with being a mother. Unfortunately, you'll be suffering many aches and pains in this last leg of pregnancy. 
There are literally thousands of women who are diagnosed with asthma every year. Asthma during pregnancy can be life threatening it compromises the health and safety of the mom-to-be. If you can't breathe, then neither can your baby! 