Medroxyprogesterone
"I'm 20 and have been on this injection for four years. I've never had a period whilst being on it and never was late for any injections. Never had any pain or weight gain and was very happy with it. Until last week! I started on and off bleeding over four days. It was only light and I didn't think very much of it, as I was quite stressed out. Only this morning I have got up to go to the loo and have had a really really heavy bleed!! I am really worried and can't get a doctors appointment. I hope it can get resolved."