I think it more how long you have been TTC as once you hit over that dreaded 12mth mark your willing to do anything to get that baby...

I have stopped all caffine with 3 of mine... Ds was the only one I drank coffee like a fish... but that was before I realised it could affect my ovulation... its worked for me... well kinda, its still takes a Looooooong time to work, but I feel it helps me...

see how you go, if your still TTC in 6mths you might find the motavation to give up...

All the best in TTC your next baby...