Period for 3 weeks

So my doctor recently diagnosed me with pcos and endometriosis. My husband and I were ttc but my period was being very irregular so my doctor recommended that I get on birth control for a few months to try to regulate things, however, now my period lasts for 3 weeks and I only have one week without one. Also it's extremely heavy I'm bleeding through tampons in an hour. It's like my cycle completely flip flopped to the opposite of what it should be. I HATE drawing attention to myself or over reacting when people have worse problems and I don't want to waste my doctors time so do you think this is worth calling her over?