Positive ovulation test,how long till I ovulate?

Elaina • Mother of 4 living children,2are my husbands,1 is mine and we finally had 1 together. When i was 18 i miscarried a child and 1/23/2015 our son was born sleeping

This is positive,Right? How long do I have to have sex ? My husband and I did the deed yesterday at like 2pm but now I'm stuck at work till tomorrow morning at 830am then he has to rush to work as soon as I get home and he won't be home again till like 230pm