Has anyone had this?

I'm currently on CD15(if this isn't my period) and I've been spotting for 4 days. The bleeding hasn't gotten heavier and my period is due next Thursday. I ALWAYS have heavy periods with clots and I typically bleed for 5-7 days. So this is very abnormal for me. There is a chance I could be pregnant but I dont think so (at this moment) since we only had unprotected sex last thursday, 6 days ago. The bleeding started 2 days after we had sex🤷🏽‍♀️. This isn't ovulation bleeding. I ovulated either the 8th or 9th(ov strips).

Any ideas? It could be my period but I'm not sure.