Simply having a double uterus does not make you infertile, unless your ovaries are not there or unless there is no connection between the uterus and the ovary. (I guess it is even possible that you would be more fertile, if each uterus also has two ovaries.) Talk to your ob-gyn, and ask if you can get an MRI of your abdomen, so as to see what is really going on. Also you might get a HSG, which runs dye up your tubes, to see if there is a clear line from your ovary to your uterus. If there is, there isn't any reason you would have infertility.
I don't know. You might want to go to a fertility specialist for a consultation.
Good luck! :)