BBT help

Ms

Hey ladies! We’ve been TTC since September 2019. Got BFP last week of October and MC’d November 3rd. Continued trying every cycle since with no luck. Currently on cycle day 6 and we’ve decided to give Pre-Seed a try and I’m also going to start charting my BBT. But I’m not sure what to do or what to look for on my chart to know I’m ovulating. Please help a girl out with some tips, tricks, and advise! Thank you ladies!