I have never had regular periods, I could go months without it, sometimes it will last for weeks. I was regular when I was on the pill but now I am not on it. I am trying to get pregnant for years....like 15yrs and have never been. I have seen doctors about this and they all say they see nothing wrong with me. I often have a very dark brown discharge instead of my period. I have been searching and can't find any answers. Can anyone help? I don't care if its bad news...I'm just tired of trying to have a baby if one won't come.