Has your husband/boyfriend been tested also? A fertility specialist can aid you if you're unable to conceive. Many things can cause difficulties with conceiving, hormonal issues being one of them. Best advice, seek help from a specialist in this area.
I am fertile, and my tubes are patent and block free, Then why am I still not getting pregnant? I am worried a lot.
How long you have been trying for? It can sometimes take a while, so until you've been trying for a good few months, don't worry.