Question?

So I was 5 days late for my period my nipples were sore, eve usually has my period right or maybe 2 days off so I know! but going on the 6th day last night me and my SO had intercourse and I started bleeding. I think it's my period but my cervix still hasn't dropped I'm kind of confused on what's going on. Is this normal? Could I be prego? Or could I just be ovulating Bc I do have 2 periods every month.