Anyone BBT charting and have a slow rise after O

I'm new here and this is my first month off pill and TTC. I started temping on cd5 my temps were extremely consistent between 97.5-97.7 on cd14 it dropped to 97.1 and after research I was sure that was a O drop next day (cd15) I dropped even further to 98.6 at that same time I had a very strange sensation in uterus and was sure of O. Cd16 97.2 cd17 (today) I'm back to 97.6 wondering if anyone here experiences a slow rise. I know they happen but would like some support in knowing what's going on luckily it's almost bed time so I can stop worrying about it and tomorrow Monday so I can get back to work so I'm not obsessing constantly!