Missing your period is often your first indication of being pregnant. Although your body looks the same, a rapid and startling transformation is going on inside.
By the end of the 1st trimester, a tiny bundle of cells has grown and formed into a baby with a beating heart, fingers and toes, and most of all, a functioning brain.
By 2nd trimester, your baby’s organs are formed but still immuture. Millions of cells are growing in her brain, with nerves connecting between brain and muscles for movement control. Areas of her brain responsible for the five senses are developing fast.