So confused with my cycle?! Does anyone see a second line?

I have no idea what’s going on this cycle! It’s my first cycle using OPKs and I have PCOS so not sure that they are accurate at all. I have had 7 days of spotting and lower back pain which I have never had before at all. The only spotting I’ve ever had was at implantation for 1 day when my daughter was conceived. I am 14 months PP and have been off of micronor progesterone only pill for 2 months now. I took a pregnancy test yesterday which showed a faint line, possibly an indent, and two tests today that show nothing. I have no idea how many DPO or if I’ve even ovulated. Any ideas or suggestions?