7 Weeks Pregnant: Surprising Symptoms & Your Baby’s Development

At seven weeks, your pregnancy is still in its early stages, but your baby is developing at an astonishing speed. Though tiny—about the size of a blueberry—your little one is forming major organs, facial features, and even a rapidly growing brain. Meanwhile, your body is going through noticeable changes, some of which might take you by surprise.

Your Baby’s Development: Tiny Features, Big Progress

This week marks significant milestones in your baby’s growth. The eyes are taking shape, with the cornea, iris, pupil, lens, and retina all forming. In just a few weeks, they will be fully developed. The digestive system is also beginning to take form, with the esophagus and stomach now in place, alongside the liver and pancreas.

But perhaps the most mind-blowing change is happening in the brain. The neural tube has closed, and your baby’s brain is now divided into three sections: the forebrain, midbrain, and hindbrain. Right now, brain cells are multiplying at an astonishing rate—about 250,000 neurons per minute!

How Your Body Is Changing

Even if your belly hasn’t popped yet, you’re probably noticing some major shifts in how you feel. One of the biggest changes? Your sense of smell might be working overtime. Scents that never bothered you before could now make you nauseous, thanks to rising estrogen levels.

Food aversions are another common symptom—something you loved last month might now seem repulsive. On the flip side, you may also develop strong cravings for certain foods.

Your bladder is also feeling the effects of pregnancy. Increased blood flow to your kidneys means more frequent trips to the bathroom. And if your emotions feel all over the place, you’re not alone. Mood swings tend to peak between weeks six and ten, triggered by hormonal shifts, fatigue, and the emotional weight of pregnancy.

Pregnancy Symptoms: What to Expect This Week

• Excess Saliva — You might feel like you’re drooling more than usual. It’s an odd but normal symptom of early pregnancy. Chewing gum or sucking on hard candy can help.
• Constipation — Slower digestion can leave you feeling bloated and uncomfortable. Eating fiber-rich foods, staying active, and drinking plenty of water can ease the discomfort.
• Heartburn — That burning sensation in your chest is common as pregnancy hormones relax the muscles in your digestive tract. Avoiding spicy foods, eating smaller meals, and sleeping propped up can help.
• No Symptoms? — If you don’t feel pregnant yet, don’t worry! Some women sail through the first trimester with minimal symptoms, and that’s completely normal.

Looking Ahead: What’s Next?

By next week, most women will start feeling pregnancy symptoms more intensely. Morning sickness may peak, and your uterus will continue expanding—though it’s still too early to see a real bump. This is also a good time to think about prenatal testing. If you’re unsure which tests are right for you, talk to your doctor to weigh your options.

For now, focus on taking care of yourself. Even if nausea is making it hard to eat well, do your best to include nutrient-rich foods in your diet. Stay hydrated, rest when you need to, and don’t hesitate to lean on your support system. Your body is working hard—so be kind to yourself!