Oct. 1-3 I got my period and the blood was brown not red like its supposed to be( thought I was prego...But wasn't

). Then in jan. 30-feb. 6 I got my period, and feb. 1st and 4th the blood was brown and would stop half way through the day then come back nomal (red blood). Then on feb. 28th I started my beriod and I was clotting alot and then half way through the day blood was brown...Again!!! And then go back to normal (red blood). I've also had bv(bacterial vaginosis) since nov. And have stopped antibiotics cuz they not working. Anyone have an idea of what this could be

?
xxxhollyxxx