Ovulation question

Okay ladies, so my husband has to give a semen sample tomorrow morning so we’ve had to not do it for the past 3 days. Today I took an opk and it’s definitely positive which I wasn’t expecting for a few days and I wish we could do it tonight but that’d ruin the sample tomorrow. Do you think we’d end up missing it if we waited to do it tomorrow afternoon after he “donates”? I took the top test at around 4 this afternoon. TIA!