BBT rise during TWW

Je
My BBT is taken every morning at 6:10 and usually ranges between 97.5  - 97.9 degrees max, even through ovulation. I am currently 8DPO and yetserday morning's temp was 98.3. This is an usual spike and a really high temp for me. Could this be an indication that I'm pregnant or just an indication that my progesterone levels are still a bit high?