Positive OPK strip, now what?

Hi all! I've been using the opk strips the past 2-3 cycles and today I got the positive on my opk strip. This is month two of TTC so I'm still new to all

of this. I know once you get the positive opk you will likely ovulate within the next 24 hours... so when should my husband and I have sex? As soon as possible? Sorry if this is a dumb question- I just don't want to miss my window of ovulation. When I tested yesterday it wasn't quite positive so I may be early in the LH surge detection. Is there a 'best time' for conception now that it's positive?

The bottom strip is from a little bit ago and the line was and is very dark. Second from bottom is from this AM but it's dried a little. Thanks for any advice!