Anabolic/androgenic steroids may alter the menstrual cycle in females, resulting in infrequent or absent menses (amenorrhea). Fertility may also be interrupted. Normal menstruation is expected to resume after anabolic/androgenic steroids are discontinued, and the natural hormonal balance is restored.
Complete recovery of the female hormonal axis and fertility can take many months in some cases, however, and long-term interruptions of fertility are possible, though unlikely.
Wlliam Llewellyn (2011) - Anabolics