A genetic abnormality may also be causing the absence of your period. Most young women tend to dismiss this since they’re not fully aware that there’s already something with their bodies. Typically, these abnormalities can be anything from a vaginal septum to an imperforate hymen. There are even cases a woman is not born with a uterus or vagina. 

Moreover, your cervix may be too narrow, or there are blockages in it. If that’s the case, then taking medications will not resolve your condition. The best option for treating primary amenorrhea caused by a genetic or anatomical defect is to have surgery.