Low fever & pregnancy?

I'm on CD 16, AF due in 5 days (I've had excruciatingly short cycles these last few months). For several days I've been nauseous, exhausted and I've had a higher-than- normal- temperature of 99.1-99.5.
Did anyone else notice their temp spike when they were newly pregnant? Could this be a sign, or maybe I'm just getting sick?
Thanks 
PS: I'll definitely take a test within the next week, just wondering what you all thought in the meantime.