How many times do you guys do the deed?

We are TTC and it's month two... we have had sex three times during my last window and my period is due in a week. We work opposite schedules right now so it's hard to get it in... I tested and got anxious but that was a BFN... yes I know I tested way to early...

I guess I have two questions... how many times do you have sex during your ovulation period AND have you ever taken a pregnancy test early and it be negative but wait a week (without sex in between) and be positive??