No BD on ovulation day..

S.J. • Mother of boys. Baby boy #4, Danny, due Feb 2017!
So yesterday my temp dropped way down with a positive OPK. My husband was roofing ALL day and had to go to his night job. He only had about an hour, but if he didn't get a nap in, he wouldn't have made it at work. I didn't give him grief even though i was so sad that for the first time in my entire life I actually KNEW my ovulation day and he was too tired. He works so hard and I didn't want to put this on him because it isn't his fault, it just didn't work out. So my question is, if we BD'd the night before ovulation and today (the day after), will that cover it?