I just need to vent.

I have been with my fiance for almost 2 years and I have a 2 year old from a previous relationship. Well we've decided to add to our family in January....we've been trying at least once or twice a week all year and still nothing..I went to the doctor everything is fine with me but he refuses to go see if he can or not because he couldn't handle knowing if he cant. We both want a baby so badly just to experience it all together I'm just super down about it....sorry for the venting I have no where else to go....