Hi My Name Is Lisa. I Have Lived With An

hi my name is Lisa. I have lived with an irregular period for over 4 years now. Bleeding in between periods and after sex. 3 years ago I started bleeding with severe pain! This lasted 7 weeks had all Sti and std tests had a scan They told me it and I quote (looks like a chemical pregnancy) and was left at that, this information came from the nurse who scand me.
3 weeks ago started bleeding again a week after my period I have had all checks done again apart from a scan I have been on norethisterone for 3 week and buscopan but I am still bleeding and the pain is still there it's that bad that the pain is giving me shortage of breath! The pain is traveling down my legs, my sister suffers from endometriosis and polisistic overys. I have been tested for overian cancer and all other things and all has came back negitive! I have been told to continue the norethisterone but what's the point as soon as I come off them the bleeding is so bad! The tablets are helping make it a little lighter but the pain is still there! The doctor has sent me to a fertility clinic because I want to have a child in the future! I need to get to the bottom of this as its ruining every day at the moment, I am thinking of calling accident and emergence just because I feel the doctors arnt taking this seriously but the last time this happend 3 years ago I got a rude nurse who said sarcasticly (your hear for a heavy period?) and gave me pain killers and sent me home! Not got much faith there going to get to the bottom of this problem so now probably need to bleed for months and stand the pain until I get my appointment for the fetility clinic! I am actually contemplating going private because the worry and discomfort, just looking for advice. ThAnkyou for listening Lisa x My email is YYYY@YYYY