Is this normal?!

Sorry if this is TMI but I’m a little overwhelmed with what’s happening and was just curious on if anyone else has gone through this as well. Me and my hubby have been trying to conceive for about a year now on and off. I got my period about two weeks ago, it was normal. Well I started to heavy bleed again today, which is weird because I’m just starting my fertile week(I ovulate on the 15th) this has never been an issue/symptom before. I’m starting to have cramps again as well?! Normal?! Is getting a second period a thing? I have an appointment with my OBGYN on the 21st but any advice would be highly appreciative as I’m freaking out a little bit of what it could be. Thank you!