update

I don't know if you ladies remember a couple of days ago I posted how I haven't had sex since October I got my period November but no period December. I did take a pregnancy test November 2-4 after my period as done an well today I took another an I got a negative. if I'm not pregnant why an I getting my period. you ladies thinks it's cus I didn't have sex for 4 Years or is it normal to miss your period like this.