Temp spike caused by restless sleep/having a cold?

Good morning,

I have been tracking my bbt for the first time this month, along with using opk’s. I have not gotten a positive opk yet, and I am getting closer to EWCM, but I’m not there yet (been tracking this for a few months). Yesterday I started feeling cold symptoms; sore throat, fatigue, congestion... and I slept terribly last night. Tossing and turning, mouth breathing, waking up and not falling back asleep right away... the works. Could this be the reason for the huge spike on my chart (shown below)?