Pineapples and fertility

So, fiance and i have been trying for a baby since august. Nothing yet. I am to the point now that i have take folic acid, and im rubbing sperm directly on to my cervix. Fiance had an undescended testicle and had to have surgery to get the other testicle to drop. Apparently he is still fertile but i feel like weve tried everything. Im now trying the pineapple and hoping that this is gonna be what helps! Any advice?