Cant get pregnant. Possibly infertile??

Kaity
My fiance and I have been trying to have a baby for 10 months now and we have sex every other day inside and outside my fertility window. But nothing seems to be working. I've tried eating foods that people say help pregnancy, neither one of us smoke, or drink, I put my butt in the air after he comes. (a friend of mine said to try the force of gravity) I've gone to a doctor and they said I'm to over weight and they won't help me until I lose weight. I'm 5'5 and 220 pounds. I don't think I'm over weight.... I just need help! Any have any advice?