BBT Graph Experts - When did I O?

[OrcinusOrca]

Was hoping some BBT experts could advise on when they think I ovulated.

I have PCOS but am on metformin and my cycles and temps seem more stable recently. I got a positive OPK on CD15, but supposedly PCOSers get multiple surges, and I didn't carry on doing them after CD15 so it's possible I had another surge later I suppose.

If I take the OPK off, my ovulation goes to CD14 on both FAM and Advanced detector on FF. if I leave it on and use FAM, it says CD18 ovulation...the image is Advanced defector with OPK on there, showing CD15 with the crosshairs.

Please could you look at my temps and tell me what day you think I ovulated? Would you pay attention to the OPK or more the temps?

I reckon CD 15 as you have a nice rise afterwards, I was more a fan of temps I found using the opks didn't match (like you!) I ditched them in the end and just went with temps, i'm looking at 8dpo on your chart and seeing a dip with another substantial rise after that for two days fingers crossed it stays high xx

Thank you @Lymphy I had a chemical last cycle so thought I'd double up and try the OPKs too. My post ov temps often have a dip so I don't think it means anything for me unfortunately, I expect I am out this month! Good to have an idea of my luteal phase though.