TTC discouragement

my fiance and I have been TTC for about 6 months now. I had a period in November then not again until April and it was light. Now I haven't had anything since April. I have gone to several doctors and gotten all the same answers. Nothing seems to be wrong. my ovaries are fine, no cysts, no premature menopause, etc. I guess what I want to ask is if anyone else has this issue with nothing wrong and not being able to conceive? I feel like I have been peeing on sticks every other day just to make sure!