No positive OPK

[deedeeze]

Hi ladies

Just wondering if it is possible to O without a positive OPK?

I recieved 2 faint test lines (about 50% of control) the last few days an ovulation pains last night with a temp shift this morning. Did I miss the LH surge? I only test with an OPK at 6pm at night, once a day.

I put a fake + OPK on my chart but do you think that I did O but the LH wasn't detected?

Thanks for your input.