For what it's worth, my wife has PCOS. After 18 months of no joy in 2003/2004, she was put on Glucophage.
Six weeks later she was pregnant. Healthy baby boy.
Eighteen months later, back on Glucophage, this time it took five weeks to get pregnant. Healthy baby girl.
Eighteen months later, without Glucophage (we were just starting to think about it), pregnant again (apparently, your body just figures it out). TWO healthy baby girls.
I have been you, the worry, anxiety, multiple negative tests, the self doubt. GP visits, specialist visits, fertility tests - the whole lot. Now I have four little and not so little wonders.
Chin up, it could happen to you.