Bleeding...

Okay so I know y’all are gonna say to go see a Dr. but I wanna know if anyone had this happen before. So my period ended on friday and then I had some very little light bleeding on Saturday but it was once and it stopped. Today (Sunday) my fiancé and I had sex and once we were done and what not I went to the bathroom and when I wiped I saw blood. Almost like I was still having my period. when I looked in the toilet there was a mucous looking like thing that had blood too. I cleaned myself up and thought it would go away but it didn’t... still bleeding a bit not heavy. Anyone else have this happen to them? Am I counting my period days wrong and may still be on it? Just anything would help. TIA