Keep BD every 3-4 days Lauren and you'll for sure be covered no matter when you O. When I was using the Wondfo opks and getting tons of positives in a row, it was obvious that I needed to only count the blaring positives (test line darker than control) as a true positive. So in your case, that would be today and yesterday only. I'm pretty sure you'll O within 48 hours, especially with your temp drop today which is common right before O.