Would it help to log time of sex?

Hello ladies!

I just learned that the fertile window for women in their mid to late 30s is much shorter than women in their 20s. 12 hours and 24-36 hours respectively.

I started using opk test kit last month and realized that my LH Surge Lasted over a 2 day window and was 2 days earlier than what Glo had been predicting for me for a while now. May be we BD’d too late. :(

I think it would be great if we could track the time of sex (not just multiple sessions a day —that also takes away sex position, ejaculation etc).

Do you think that when I’d get a positive surge it would help tracking LH surges with time of sex (multiple sessions) in that 12-24 hour window?

Thanks!!