When temping...
Temp at the same time in the morning immediatelly after waking, after at least 3 hours of sleep, before moving or even talking.
Record temp in charting app. Fertility friend is my go to
Your temp will rise, either suddenly or slowly, after ovulation has occured.
Some will see an 'ovulation dip' but not all do.
Your charting app will alert you after 3 days of temps higher than the previous 6, that you have ovulated.
Once the egg is released, it will live 12-24 hours after and if fertilized will travel down the tube to implant in your uterus.
Your temp rises after ovulation because of tge progesterone that is produced. If pregnant, your temp will stay elevated. if not, it will drop a day or so before AF arrives.
Hope this helps!