If all my tests come back normal, why can't I get pregnant?

I don't really have an answer for you but I do feel for you! I spent 5 years trying to get pregnant and I am now 28. I did the Metformin, Clomid, etc. and also did 3 IUI's with no success. Like you, neither one of us had anything wrong that the doctors could find. I pray that God will bless you with a child. Hang in there and keep your head up! I am now the proud mama of a little boy that I adopted through foster care! I know its not the same and I wanted so bad to experience the whole pregnancy thing, but I am so incredibly thankful for my son that even though he didnt come from my belly he is still mine! There are other options out there if you are unsuccessful but just try and relax! Good luck!