EWCM & negative OPK

Bex • 1 yr old triplets from IVF
Which one do I go with as a sign of ovulation?? We BD'd anyway to be safe but I'm not supposed to ovulate for a couple more days. My OPK is getting two pink lines but the test line is definitely not darker than the control line yet. I had stretchable EWCM today at about 5pm. Negative OPK at about 11pm. Which is stronger indicator of ovulation??