TMI PIC -Now im real confused AAARGH

Ashley • 👣SAHM🍼﹏∞wife∞﹏🍷Italian﹏Pisces♓ ﹏🌴BeachBum 🌊﹏
Opk pos on cd 14. Later that night I felt ovulation pain. And had excellent ewcm. My bbt went up the next am, from 97.31 to 97.96. but this morning it dropped, to 97.81 so now I'm worried. After you O does your bbt have to stay at the same degree or higher, or can it go down a little bit? I thought it would keep rising?