One of the most important things you can do is get healthy. PCOS or not your body and all it's functions perform better when you're in good health. Track your fertility! I chart my BBT. (Basal Body Temp) This over time will help you get a better idea of when you are most fertile. Though, if your periods are very irregular like mine checking cervical position etc. along with charting temps is a better way to go about it. I have PCOS and have been trying for 5+ years (2 miscarriages) w/o fertility medication. (I've had them, I just could not get myself to take them) One big tip is to just stick with it! You may be one of the lucky ones who will not have trouble conceiving
but if you do then stick with it! It is hard, I won't lie but one day you may have something that is worth each and everything you went through.
Good luck when you decide to try!