Timing?!?!

Stacy
My BF and I aren't "officially" trying yet but we'd love it to happen. We've both been married before he's got two kiddos already. My ex and I tried for years with no luck, I have PCOS and he had some male factor issues. (The ex not the current, he's healthy as a horse)
Well for the first time EVER in my life I have a positive OPK! Very exciting! My question is this, we BD last night but tonight we'll have company (the little ones) my positive was today (early afternoon) do you guys think it's possible his swimmers will persevere?? I know O can happen anywhere from 24-48hrs from now...yeah I know I'm thinking about it a lot for someone not trying lol