I dont know what to think.

What do you think because I'm confused. I got my period on the 30th, had it for 5 days. 3 days later, I started spotting, and the next day( yesterday) it was like a medium period flow. This morning it a light to medium period flow... Had sex the two days before my period and the day, and the day after my period stopped and the day the spotting started. I have 4 children currently trying for a 5th.... I have never experienced tjis before, What are your thoughts?