There isn’t much data available about long-term fertility for patients who take testosterone. Still, some trans men successfully get pregnant after they pause hormone treatment for a few months. “In my own experience, I’ve had several patients who take testosterone stop hormones for a couple of months, have a kid and go back on hormones,” Reisman says. She adds that there are about 55 cases in the medical literature of transmasculine patients who have become pregnant. The cases are reassuring, however, Reisman says, “We counsel all our patients to think about doing fertility preservation and egg freezing before starting hormone therapy.”