I'm so confused.

Kristin
I just started charting my Bbt and all that jazz and was wondering if you ovulate when your bbt spikes, after it comes down from a spike or what? And also I was intimate on the 6th and then entered my fertile window. So the question is, could My eggo be prego from sex that long before my ovulation date? Help please I am so new to this I just would like to understand.😑