Week 7: Rapid Brain Growth and Tiny Limb Buds

Your baby's brain is developing at an astonishing rate — around 100 new brain cells are being created every minute. The head is proportionally large compared to the rest of the body right now, which is completely normal at this stage.

Arm buds have grown longer and are starting to differentiate into upper arm, forearm, and a paddle-like hand shape. Leg buds are following a similar pattern slightly behind the arms.

The kidneys are starting to form, and the intestines are beginning to develop, though they're still outside the abdominal cavity at this point — they'll move inside in the coming weeks.

Your uterus is now about the size of a lemon, even though there's no visible bump yet. Blood volume is increasing to support your growing baby, which can sometimes lead to lightheadedness if you stand up too quickly.

Common symptoms this week include:

• Continued nausea, possibly intensifying
• Fatigue
• Mild dizziness
• Constipation as digestion slows
• Heartburn or indigestion
• Noticeable mood swings
• Excess saliva

Fiber-rich foods like whole grains, fruits, and vegetables can help with constipation, which becomes more common as progesterone slows digestion. Pair this with plenty of water.

If certain smells trigger nausea, cold or room-temperature foods often have a milder smell than hot meals and may be easier to tolerate.

Gentle stretching and short walks remain great choices. If dizziness is an issue, avoid standing up too quickly from sitting or lying positions, and stay well hydrated before any activity.

This week, consider:

• Tracking your symptoms in a journal or app to discuss at your next appointment
• Asking your doctor about safe remedies for nausea and constipation
• Continuing prenatal vitamins consistently

If you've already had your first appointment, your next one likely won't be for a few weeks unless you have specific concerns. Keep a list of questions as they come up so you're prepared.