Suggest Treatment For Infertility

Hi, may I answer your health queries right now ? Please type your query here...I use to masturbate a lot since I was 15i am married for 5 years and have no children yet,like smoking!have lower back pains,my wife doesn't go for periods 4 to5 months,have tryed provera tablets but as soon as she stops taking them the problem still is the seme.when pregnancy test done it shows negative,what shold I do