hi im 24 year old i have had 3 childen. its been 4 year since my last pregnancy over the last 6 month i have suffered extreme bleeding when on my period to an extent where i have been given tablets off my gp to stop me then afer 9 days i started to bleed again i got the injection pill hoping to reduce bleeding but with no avail i am still bleeding 3 weeks on not heavy just constant spotting i hope i can find out why or be given some help thank you.