TWW Temp Drop

I am 5 DPO and my Temp dropped .15 degrees Fahrenheit today. It had been climbing daily prior to this morning. I am hoping the drop was due to my cat preventing my feet from being under the blankets making me colder and is not indicative of a BFN next week. This is only my second month temping and the first time the chart had a coverline (which I am still above)

If a temp drops during the TWW does it mean the person could still be pregnant or does it indicate no pregnancy?

Thank you for your help! 🙂