Won’t stop bleeding!!!

Ok so I’ve had a regular monthly period for a year or longer now and I started birth control which completely messed it all up!!!!

I had my period... took it the Sunday after like instructed and I’m on the third week now... I’ve had my period for like 3 weeks straight with cramps now (getting worse and heavier) and I feel like I cant wear anything cute anymore because I can’t stop bleeding IDK WHAT TO DO!? Will it ever enddd???