Pinching and twinging is a great sign guys, i got them too just few days before i got my opk. The day i actually O'd though I had really intense cramping, it kept jumping from right side to left like both ovaries were battling to see which one would release their egg first lol. I think the left ovary won though cos in the evening i had a really long sustained and intense cramping on the left side so I think an egg got release from the left ovary. The following morning i had a temp spike but no other symptom. Its like when a fever breaks and all is calm, I felt totally fine yesterday, a few twinges here n there but nothing to get excited about really and today I woke up with af type lower back pain but totally fine now.
GL guys!!