Positive OPK's and continue to BD?

Yesterday, at 1p, my OPK was beginning to turn positive. Then at 7p, I got a defiinite positive. I took another one at 11p, and it probably could have ped as a positive. This morning, I took one at 11a, and it was a definite negative. My DH and I BD'ed last night, but do you think we should again today considering it seems like ovulation already occured?