Bleeding during sex

Help! Me and my fiancée were having sex the other night and randomly started bleeding but just thought i got my period rigt on time. Then the next morning there was nothing. Then it happened again the next night. I just thought a weird period since I stopped taking my bc a few months ago. Now it's been a week and we did it last night and it happened again. I'm really worried somethings wrong with me or I could be pregnant going to get a test today but hoping it's not a cyst or something.