BBT temps and changing bedding/sheets

Ann

I have read that this can change your temp. The night I changed my sheets I had a spike and it’s stayed up there for the last 6 nights. Which would confirm ovulation. But I’m wondering if it’s possible just my sheet change and not from ovulation.

I had regular cotton sheets and a feather down comforter. I switched to linen sheets and I added a duvet linen cover to the feather comforter. They are kinda cool to the touch but are heavier than the prior sheets.

Does anyone know?

I circled the night I slept with the new sheets in my chart