Originally Posted by
atomic sagebrush
Well, that's why we use the OPK, to help us know when to have the one attempt though. So it's not just picking a day randomly, we have the technology to know when O is coming.
Re every 4 days, yes there is an element of luck involved but most will have their attempts on O-3 and then the next one on O Day. So if there are any sperm left from the O-3 attempt, the egg shows up and they will have fertilized it before the O Day shot will have capacitated (sperm cannot fertilize the egg immediately, it takes several hours). If there aren't any left over, then the O Day BD will be there as a backup. So either way, it works as if it is one attempt really.
Some people do choose to go that extra day and end up with O-4 and O Day (if they have bad luck, that is, most of the time they'll have attempt on O-3 or O-2 or O-1 instead) and yes that is going to be lower odds of conception, but possibly better chances of pink. We just don't know for sure.
No, your partner does not have to abstain the rest of the time. Some will add abstain onto that but only 7-10 days before. Others will do daily release or even just skip that part and have hubby release every 2-4 days or nothing at all and just let him "do what he does". That part has not seemed to matter much if at all, it's the one attempt or e4d that has seemed to help.