DH and I TTC'd for over 2 years before we were successful. Believe me, the TTC sex was nothing compared to the "fun" sex. It had become very mechanical for us. As a matter of fact, the night that we conceived we had a bit of a spat because neither of us was in the mood. We ended up doing it, and lo and behold....!!
I guess everyone is different.
EDD: Sept 6th