Originally Posted by
atomic sagebrush
If it were me, I would DTD the night of the pos OPK and then again the next day, but I don't put much stock into timing and I also think that the overall sperm numbers that are in DW's repro tract matter more than the sperm count itself (so even if some guys might have a small decrease in number of swimmers from 2 shots back to back, by virtue of having more sperm on hand to make it to the egg will counteract that and sway blue even more so.)
For strict timing, DTD the day after pos OPK.