BBT up from 97.7yesterday to 98.6 today which is expected period day.. Is this a good sign for pregnancy?

KayDee
Cervix is high and medium with creamy cm. Not a lot. I would say a medium amount. Took a POAS 10dpo bfn. Today temp just spiked and no sign of AF. Breasts are having a few shooting pains in them and nipples are sensitive but not overbearing. Should I wait to take another poas? Glow shows today is the expected period but another app shows yesterday was my day.