viginal bleeding

i have been using the contracpetive injection for 1year now and recently started bleeding every day.
The blood is an abnormally dark colour, what could this be..?

[Sagittarius]

Hi. I have been using Zoladex injections for five months now (I had four injections and I will have two more and the treatment will finish) and previous week I started bleeding and that lasted four days and while I was bleeding I was feeling all the menstrual simptoms and paints. I was worried and very upset because Zoladex makes you go into a condition of menopause and there shouldn't be any bleeding, so I asked my doctor and he said that that is normal because this treatments (Zoladex, contraceptive pills and injections) are very strong and the body is controlled by them and the body struggles with that because is not normal and natural and it must knock out (in this case with bleeding). If the bleeding lasts too long or you feel that something is not ok, contact your doctor. But, if this is the first time that you are bleeding, that is normal and it isn't serious, as far as I know (from my experience). However, if you have some doubts, talk to your doctor. And, don't worry too much!