Hello OP, I do know what you are talking about because I am having the exact same problem as you do. I have been trying to get pregnant and exactly as you, I just have not had any luck with it. in the beginning, I have been using some pills (birth control) in order not to get pregnant and back then while I've been on those pills I was getting regular periods and everything seemed to be just fine. but then later I decided that I wanted to have a baby and get pregnant so o stopped to use those pills and I soon as I have went off them I have started to get irregular periods and that's why I had to change this and that's how I have ended up in being put on metformin (prescribed by my doctor). but, once again as I have said it earlier, ever since I have been put on metformin (since I started to use it), I am bleeding every day too. and I guess that the previous poster haven't read your post very carefully because it is clear as a sunny that that you didn't meant to say that you bleed a week in a month like a usual period, but every single day. and that's the exact same thing which is going on daily for me, I am seriously bleeding every single day and this, obviously, scares me. this is really embarrassing and I do wish a lot that this would stop. and there are also some times (rarely) when I am not bleeding and as soon as I notice it we are having intercourse with my husband trying to get pregnant and then, all of a sudden, I start bleeding once again. I am not sure, of course, what you are going to do, however I just called the doctor who has prescribed it to me and I have told her that I am stopping to use this medication because it can't continue like that anymore and I just can't resist and so I am now having an appointment scheduled in order to get an ultrasound done to see what's wrong with me. but yeah, as you, I do think that this is really the medication itself causing me (and you) to bleed without stopping. I honestly I am getting depressed because of this is always happening to me and I am not sure how to stop it and to get pregnant. I honestly have a feel that if I am going to get pregnant everything is going to get normalized in my body and I would be fine. also… please, just write me back if you already went to see a doctor and if you did, please tell me what he (or she) told you. I really want to know their opinions and what they decided (I mean, let you stay on it or no). the problem I have with mine is that my obgyn doctor is a really busy doc and so it takes a between a month to 3 to see her… please get back to me as soon as possible. if you want then we could go PM as I don't mind if you feel more comfortable this way. thanks in advance and wishing you good luck.