Had unprotected sex on 8/8.he didn't ejaculate in me&wasn't all the way in supposed to get my period on 14/9.but start bleeding on 9/8.anything wrong?

Maybe (not): Sorry I can't be more definitive. Partly because I'm trying to understand your dates (since we Americans do things backwards from rest of world). Sounds like you had sex on Aug 8th then bled next day, Aug 9th even tho you don't expect your period until Sep 14th. But if that's the case, why wouldn't you expect a period this month eg Aug 14th? Anovulatory cycles are common cause of irregular menses