I understand what you are going through. I too have a problem with not having a regular cycle. I have one twice a year, only with provera also. I wish I had some helpful information but I myself am trying to get this situation solved. A possibility that a couple of my doctors have given in the past for me personally was that I might have endometriosis. I don't know the extent of your case but I thought I would suggest it to you so you could mention it if you want. I also will pray for you.