Body Temp Pattern?

Hey guys! I've been tracking my body temp the last week, and its been up and down constantly. It'll go down then dip back up, and back down again. It was the week before my fertile window. I just started my fertile window as per Glow this morning. Could it fluctuate based on the temperature in my bedroom, me being tucked in my blanket tighter some mornings, the weather outside, my air conditioning setting? I feel like I woke up this morning completely wrapped up in my blanket and do feel a bit warmer than I have in the past week. I've been testing for ovulation and haven't gotten the positive yet, so I don't think I missed my chance?

Need some motivation, y'all. 🙂