worried

Okay so this period was really weird. I had cramps and everything I bled but then stopped. The next day bled lightly then stop, the next day bled lightly then stop, and same shit for the rest of the week. Idk what is wrong with my period I’m scared a bit I had sex a day after my ovulation ended but I don’t think I’m pregnant. I mean if I am okay that’s fine but I wasn’t really planning on it yet not until another couple of years but my period is really strange this month idk why it’s like that it started about like 3-4 days late and every since it’s been weird. I haven’t bled out or nothing just like blood but then it leaves...;idk any ideas?