When I was ttc my first child, I hold off on sex until I got my opk positive and it worked
It definitely helps to have sex before ovulation than after. I've heard different things about when to have sex. I've heard every other day so that the sperm has time to replenish then I've heard to go at it like rabbits when the fertile time has arrived. Honestly, do what feels comfortable to you. If you and your husband are up for more sex tonight, I say go for it! Good luck!