PERIOD FOR 43 DAYS

PLEASE HELP ME! I've had my period for 43 days!!!!!!!!!!! It's been going since I started the pill. I went to the doctors last week and changed to a different pill. It's been 43 days and I'm miserable, I'm emotional and a wreck and it's putting a strain on my relationship. Does any have any advice? Or some comforting stories of their own? Has anyone else experienced their period this long? What did you do to stay positive?