Week 10

Your Baby at Week 10

At 10 weeks, your baby is the size of a strawberry. All vital organs are completely formed and beginning to function together.

Key milestone: The vital organs are fully formed and beginning to function. Fingernails and toenails appear.

Your Body at Week 10

During the first trimester, your body is working overtime to build the placenta and support rapid embryonic development. Hormones like hCG, estrogen, and progesterone surge, causing many of the symptoms you're experiencing. Your blood volume is already increasing, and your uterus is beginning to expand — even if you can't see it yet.

Your baby at week 10 is the size of a Strawberry, measuring about 1.2 in (3.1 cm) and weighing roughly 0.14 oz (4 g). The focus is on forming all major organ systems that will sustain your baby through the rest of pregnancy and beyond.

Your Baby's Development This Week

At 10 weeks, your baby is the size of a strawberry. All vital organs are completely formed and beginning to function together. The key milestone this week is that the vital organs are fully formed and beginning to function. fingernails and toenails appear.

The first trimester is a period of incredible transformation. From a single cell to a fully formed fetus in just 12 weeks — your baby's development is happening at an astonishing pace. Each week brings new organs, new abilities, and new reasons to marvel at the process.