Hello,

I'm 22 years old . Recently I had my forst sex with my boyfriend on jan 12 ( I was supposed to get my periods on 11th ). When I had sex , my hymen broke and my vaginal bleeding started when I went to toilet. So till now , I haven't got my periods . We used condom and also he removed penis out while ejaculating . Can you tell me what's the cause in delay of my periods  ?