Can I take a medicine for infertility or to ovulate?

Good afternoon, at 6 years I had a bartolinite, which made me stay 1 month in bed, until I solve it, after that I have been having complications every time, infections, bleeding, dark discharge and other white and badly I do not take any contraceptives, because I want to get pregnant, I have already done several exams that did not work at all, the doctors say that I have nothing, but I can not get pregnant, the biggest problem is that I have pains in the ovary, most of the time) and my menstruation is very unregulated, so much that February and April did not come, my husband does not do the spermogram, because what everything indicates the problem is with me, could I buy some medicine in pharmacy, one for infertility or to ovulate without the prescription of the doctor?