Is there a point where I should just stop?

CB
I've been so tired of ttc lately. We have been trying for over 1 1/2 years and while I realize that's not nearly as long as some others, I just feel hopeless. I have this gut feeling that I won't ever get pregnant (long history of PCOS) so should I just cut my losses and move on? I'm sad but I'm so tired of ttc.