Anyone use OPK??

How long after getting a positive opk were you able to have sex and ended up getting pregnant? I got a positive on Saturday night and a super positive on Sunday morning at like 5:30. Sunday night around 8 I tested again and it was still positive. We both had to work Sunday and my husband is 2 hours away from home working. So I drove to him after I got off work Sunday. we got to have sex Last night (which the the sunday that I was getting a positive but I got the first positive on Saturday night) I just hope I didn’t miss the time frame!! We have been trying for our first baby for a while and I will be devastated to think I missed it by a few hours. We also used preseed for the first time.

The one on the right is the one from Saturday night and the one on the left is about 5:30 Sunday morning.