It depends on vaginal or C-section delivery, the degree of tear during delivery, and your general health. The best scenario is having a vaginal delivery, 1 or 2 degree tear, and good health; you will probably be well enough to return after 4-5 weeks. Everyone is different. I would prepare for the less than the best scenario, and it means you will need others to cover for you next semester. If you plan to nurse, it's even harder to recover. Just my 2 cents. Good luck.