"It'll happen when you stop trying!"

Every month I get so upset when I get my period, or when I find out someone, anyone from a friend to a celebrity is pregnant! My husband keeps telling me it'll happen when it happens!! I can't stand it! Also the "it happens when you stop trying!" I've tried it but I can't get it off my mind!! I don't know how to seperate  myself from trying with everything to get pregnant!!      Am I alone???