We are definitely going through that right now.
It is so stressful, and you are right, it gets to the point where it does consume your life. I guess DH heard from some other people that they finally got pregnant when they stopped trying. I told him I just wasn't there yet. Even if we weren't "trying" I would know what cycle day I was on, etc. and would still be "trying". I am no where near ready to give up yet, and can't stop tyring until I am. Sometimes, I think it would probably be better if we did, but then I think "what if we miss the day just because of stuff" and I can't help myself...
My insurance went up over $250 a month for no reason (well, they said it was because people in my network use the insurance...). I wanted to switch to a plan that is the same but costs about 1/4 as much. Can't do it...might get pregnant within the first year. Want to change jobs...want to plan for this...want to maybe do that...nope, what if I get pregnant. My head hurts, should I take some Asprin...hmm, on the tww probably shouldn't risk it...no alcohol ever (not really a big loss for me, just saying)...feel bad when I drink my one cup of tea in the morning because of the caffieene...scold DH for doing unhealthy things that might effect fertility then feel TERRIBLE afterwards...I've gone crazy

I know it, but I still can't seem to stop myself...
DH and I are in a position where we could take a trip to Europe in the spring...what if I get pregnant...I really wrestled with this one and still am. I told myself that that's fine, but what if I don't? Then I am at home not pregnant and not in Europe and feeling twice as miserable, KWIM? Then a friend asked if we wanted to do a trip with them instead, a Bahamian 7-night cruise. I thought, that would be better if I was pregnant...but what if I'm not, would I regret missing Europe? It is crazy!