My fiancé and I are TTC (month 2). This is my second month taking OPKs, as suggested by my doctor and according to my Glow calculated fertile window. I've had some pretty obvious ovulation symptoms the past two months and cannot seem to get a positive OPK. It is incredibly frustrating, because I can feel it happening but no LH surge is present apparently.  Is anyone else having this issue?? Is this a common issue among PCOS patients who are TTC?