Losing hope

Hubby and I have been married for a year and we have been trying for six months with no success but just frustration and it's starting to take a toll on our marriage because he sees how frustrating this is for me as I so desperately want to be a mother.. I'm starting to go crazy and keep thinking what if theirs something physically wrong with me that I can't ever have kids.. Trying to stay positive but I'm starting to lose hope