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7 Weeks Pregnant: Your Baby’s Development

Although your baby’s brain development will continue long after birth, the basic sections have formed. As the week progresses, this organ will divide into three parts: forebrain, midbrain, and hindbrain. The forebrain will be responsible for things like reasoning, problem solving, and forming and retaining memories. The midbrain will relay electrical signals to their final destinations in the brain. The hindbrain will take care of breathing, heart rate, and muscle movement. Limbs are also growing fast: Tiny arm and leg buds have sprouted!

If you have an ultrasound scheduled for this week, you may have an opportunity to see something amazing: a heartbeat, even at 7 weeks! Don’t worry if this isn’t in your doctor’s plans quite yet. We know you’re eager, but there’s going to be even more to see in the next few weeks.

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How Big is Your Baby at Seven Weeks?

Your little one is growing fast! This week a fetus is about the size of a small blueberry, with an average length between 0.15 and 0.3”.

pregnancy week 7 fetus

Mom’s Body at 7 Weeks Pregnant

Pregnancy symptoms from previous weeks continue to manifest and some of them become more pronounced this week. For example, the pee parade continues as you find yourself constantly running to the bathroom. Your raging hormones and increased blood volume are to blame for causing your body to produce more fluid, which then has to be eliminated. Instead of cutting back on your water intake, make an effort to drink more than you did before you were pregnant.

Healthy habits should take center stage now. Your healthcare provider may caution you about the risks of contracting toxoplasmosis, an infection that’s passed through raw or undercooked meat and cat feces. The infection is harmful to your fetus but not to you (unless you have a weakened immune system). you may already have had toxoplasmosis without knowing it – if you have, you are immune. To avoid coming into contact with the germ, order your meat well done, wash your hands thoroughly after preparing meat, and take yourself off kitty litter duty for the rest of your pregnancy if you haven’t done so already.

7 Weeks Pregnant: Your Symptoms

  • Excess Salivation – You may be among the many women who notice a condition called ptyalism which causes increased saliva production during the early stages of pregnancy. It is typically accompanied by nausea and heartburn. Talk to your doctor about ways to counteract this symptom.

  • Strange Food Cravings – Feel like pickles and chocolate? Can’t stand the smell of eggs you used to enjoy? Both symptoms are caused by hormones, and some believe that aversions may be one of mother nature’s methods of preventing you from eating things that might harm you or your growing baby.

  • Upset Stomach and Nausea – Of all this week’s symptoms, morning sickness can be the worst. It’s often in full effect at this stage, and it can make you feel absolutely miserable. Luckily, it’s likely to disappear during your second trimester.

  • Diarrhea – As if you needed another trip to the bathroom! At 7 weeks, diarrhea is usually nothing to worry about. It’s among the gastrointestinal symptoms that occur due to fluctuating hormones, and if you’re experiencing morning sickness, you might have diarrhea to go along with it. Confusing as it is, constipation can be normal at this stage, too.

  • Spotting – Spotting is considered normal – especially after sex. If you notice heavier bleeding or if you’re worried at all, call your healthcare provider to understand if the bleeding you’re experiencing is common.

  • Cramping – If you feel mild cramps, you’re experiencing normal symptoms since your uterus is expanding, so some discomfort is to be expected. If the cramping is severe or if you feel pain other than cramping, call your doctor to discuss.

  • Fatigue – You may continue to feel exhausted this week. It’s hard work, growing a baby! Take good care of yourself by resting as often as you can.

7 Weeks Pregnant: Things to Consider

  • Start looking at maternity fashions. Stretchy clothes might fit you for a little while longer but you may find that you need a few basics soon, and maternity jeans are super comfortable.

  • Think about replacing spicy foods that can cause heartburn. Also, if you can’t stand the idea of eating meat or eggs, find plant-protein stand-ins and be sure to supplement with vitamin B12. Healthy, bland foods are ideal right now, even if they’re not terribly exciting.

  • Take good care of your skin. Washing with mild soap and water can help keep acne from getting out of control, as can a fresh pillowcase. Be sure that you’re using the mildest moisturizers and cosmetics available to help avoid clogging your pores.

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7 Weeks Pregnant: Ask Your Doctor

  • Call your doctor right away for heavy bleeding or pain other than mild cramping.

  • Find out if your healthcare provider does early first trimester ultrasounds - you may get to have an ultrasound as early as 7 weeks. However, don't get your hopes up as no two healthcare providers are the same and some may choose to wait a few more weeks.

7 Weeks Pregnant: Your Checklist

Keep drinking plenty of water, despite all those trips to the restroom

Make sure any meat you eat is well cooked

Get a flu shot early in flu season

Sign up for even more weekly pregnancy tips.

7 Weeks Pregnant: Your Checklist

Keep drinking plenty of water, despite all those trips to the restroom

Make sure any meat you eat is well cooked

Get a flu shot early in flu season

Sign up to get weekly pregnancy tips