"Not trying."

I hear all the time that stopping trying is the one of the best ways to get pregnant; and it makes sense in a way as stress can affect things.
Only problem is; my partners a female so we if we "stopped trying"
It most definately wouldn't happen. 
It kind of makes me sad, that for as long as I want a child I'm going to be in hyper stress every month. I've tried everything to relax, I just can't. I get so nervous/excited/scared it hasn't worked :-(