Has anybody got pregnant after trying and trying, and when you were going to give it up BINGO!!!!?

I have been trying and trying and trying, and nothing yet. I am so over stressing about it. I hate being depressed when it doesnt happen, I hate how my hubby will want to try and we will try for a while, then he decides he doesnt want to so we quit trying, then he will change his mind again and we will try. I am going to just give up and not care about it anymore.