One week late...

Mayra

My period is one week late. All tests come back negative, but for the last 2 days I've been exhausted! I mean having difficulty driving because I fear I might fall asleep.

My bbt is a little higher than usual. I'm normally 96.67 and the last few days have been 97.50 and higher but never reaches 98's.

Had a little nausea back on the 15th and again on the 17th but that's about it.

Is it possible to be pregnant?