bleeding on and off after period?

hey guys so last week i had my period as usual. It ended on Sunday. Well Monday and Tuesday i had really bad stomach pain and couldnt move. The pain went away and I've been nauseous up until today. Well Wednesday i started to bleed a little bit almost looked like i was going to get another period. It stopped went away. I woke up this morning and same thing! I still feel nauseous and I've never had this happen before. Has anyone had anything similar. Yes I'm going to the doctor i just wanted peoples input first. thanks!