Temp tracking questions

Maria • Married💑 7yrs. DD#1👩 5/15/14 DD#2👶🌈 3/28/17

I just started tracking my temp at the beginning of my fertile window, which was last week. So I have some questions for those of you who have been doing it longer:

1) How soon after ovulation do you typically see a spike?

2) How long does that spike last if you're not pregnant?

Thanks for any insight! ☺