Frustrated beyond words

I am so sick of trying and nothing. My husband and I have been trying for over a year now. I am sick of the disappointments and the agony of it. Thinking about just giving up on having another baby. I feel like a failure at this point. My sex drive over the last month has pretty much went out the door because in the back of my mind I am thinking if we don't have sex there can't be a heart breaking disappointment. Is there anyone else in the same boat? Should I just give up?