TTC ovulation question

Kelly
My husband and I are trying to conceive. I got a positive OPK o Saturday around noon. We BD that day and Sunday. We were not able to BD Monday, so we are going to do it today. Do you think will cover it? I'm nervous we missed our chance since we didn't BD yesterday. Not sure how the OPKs work, and how long after it you ovulate. Any help would be greatly appreciated.