I give all the female pre-meds that I meet the same possibly controversial advice: If you want to have children before age 30, you should seriously reconsider your decision to go to med school.
Of course, a lot of women don't go to med school straight out of college. I was recently talking to a 30 year old woman who was considering starting med school. With medical training lasting anywhere from 7 to 10 years, a 30+ year old female starting med school doesn't have much choice but to try to spawn during the training period.
So the next obvious question is, when is the best time to procreate during medical school?
First year: Might be a good time, provided you give birth to a magical baby who sleeps all the time, allowing you to study... in contrast to most babies, who require constant attention all day and night. (I don't have a magical baby.) Also, is formaldehyde teratogenic?
Second year: This year pretty much revolves around STEP 1. If you get pregnant this year, you risk having preggo brain (a scientifically documented condition) or possibly milk brain (also scientifically documented) during Step 1. And then OMG, you'll never match in dermatology!!
Third year: Picture being eight months pregnant, your feet swollen, 30+ pounds of extra weight hanging off you, having to pee every thirty minutes, horrible back pain, etc. Now picture all that, and also having to stand in one spot for six hours holding a retractor while getting yelled at by the surgeon because you're not holding it right and you don't know what makes up the inguinal triangle. Yeah. (Even without the pregnant part, it's not so much fun.)
Fourth year: This year is basically like a paid vacation (except in bizarre-o world, where you're the one who pays your employer). You're supposed to take classes that will help you for residency, but who are we kidding. Theoretically, this is the best time to have a baby. Cons: then your intern year starts and you still have the baby.
Still to come: When is the best time to have a baby in residency? Stay tuned!