Hello, gorgeous mama-to-be! You’ve officially entered the home stretch—months 7, 8, and 9 of this wild ride that is pregnancy. Think of this as the pregnancy equivalent of the final level, but with more waddles, snack cravings, and nursery Pinterest boards. I’m well into my third trimester, and it’s all starting to feel real. So from one mother to another, here’s my third trimester guide.  What’s Going On in That Belly (and Everywhere Else) You’ve got a teeny human doing a serious growth spurt, and believe me—they’re not subtle about it. By week 31, most major development is done; now the baby’s packing on the pounds at roughly half a…