Kinda alittle worried

So i had sex wth my bf. And so awhile ago maybe last week we fucked and I got off my period 3 days before. So when we fucked. I and later I went home I went pee there was blood. So I was like prob from my period well. We did it again Tuesday... and I went home and peed there was ig still cum (from me I hope) and I look there was alittle blood stil n it's been a week. Idk y bleed. Now. Like im worried idk were he came the first time Tuesday and he had a rag the 2 time and he came in. I'm just worried now. And yes Ik about sex I'm jsut worried.