Congrats! During your 2nd semester, you'll still see your OB every 4 weeks. At the beginning of your 3rd trimester, it'll be every 2.5-3 weeks. During the last month, you'll see your OB every week. You'll see your OB at 4 weeks postpartum and then 6 weeks after the initial visit. FYI - you will be sleep deprived after birth so you may want to take that into consideration. Good luck!