Bbt charting

Crystal

Need help woth bbt charting. Im to understand how it works. I started charting yhis week and every day it goes up by 1 point. First question is what does this mean? Second question is what temp is it when you ovulate? Third question is if youve been pregnant before what was your bbt after you conceived? Yes i know everyone is different, but i really need guidance on this.

TIA