My temp and ovu right now is confusing


So we have been using the clear blue advance ovu kit. I need some decoding lol. Thursday and Friday (21st-22nd) both days low ovu with temp of 97.7 both days. Saturday high ovu with temp of 97.2, (weird the drop in temp?) Sunday high ovu with temp of 97.7, and Monday today high ovu with temp 97.5. I'm confused Bc I thought ur temp is supposed to go up .5 to 1° when experiencing high ovu right before peak? Mine went down then back to normal then a little drop again. Ladies anyone have advice for me please?