If you usually take your BBT at 4 pm, you can't compare one taken at 7 am ... and shouldn't (but CAN) compare one taken at 2 pm. Time is really important with this.
What was the one from 4 pm day before yesterday?
And you really should chart your temps (do you?) on a graph. Not everyone gets a huge jump. Sometimes the shift is only a few tenths of a degree and you have to look for the tiny biphasic pattern. What is/was your cervical fluid like? If it was, say, sticky you probably haven't O'd yet but if it was like eggwhites you might have.
We don't have enough info to say.