Hi, I Have Had Bloody Discharge For 3 Weeks Now..

Hi, I have had bloody discharge for 3 weeks now.. it started off as pinky but now is brown, occasionally red. I have recently noticed a fishy odor. I have no other symptoms such as pain during urination or itching/swelling. I came off the mini pill 7 months ago and periods had been fairly regular but have not had my period for 2 months now