I need help asap ‼️‼️

So I had unprotected sex Jan 30th of this year and yes he did cum in me.. But I just came on my period feb 8th and I'm jut about at the end of my period today (feb 14).. What I'm confused about is why did I get my period if he definitely did what he did?? And no it was not the "implantation bleeding" it was heavier than that.. Then I was reading that some people still get one or two more periods before it completely stop so can someone please help me 😩😩‼️