Weird Cycle?

Paola❁
I got my period March 21 & it went on thru the 24 as a regular, but heavy period. Then it became like a little bit of red blood but mostly brown stuff for a few extra days. Then about a week ago I start with the same problem. tiny bit of pink blood but mostly brown stuff. Any suggestions?? I take birth control, but I don't think that could affect anything. My next period is supposed to be on the 19th of April. That is quite far away to be already with this brown stuff and light pink blood. 
Also the blood is only visible when I wipe never on my underwear or anything.