Should one start taking prenatal vitamins immediately after stopping the pill or only after a positive test and which ones to choose?

It is recommended to start taking prenatal vitamins with 400 mcg of folic acid per day at least 3 months before conception and throughout pregnancy. If you are currently taking a pill that contains this amount of folic acid and tolerate it well, you can continue taking it. However, if you experience stomach discomfort, find the pill too big, or it is expensive, you could just take folic acid instead of a multivitamin. A healthy diet and regular exercise are also good habits to adopt when preparing for conception.