When you DTD, the sperm that make it into the cervix will do one of a number of things. Some go to "sleep" in cervical crypts for a period. Others make their way to the ampulla of the fallopian tube, where some will again sleep and others will try to find the egg. Most other places apart from these are hostile and they won't survive very long (ie their starting locationand the uterus). When they are active, they wear themselves out faster. Whereas the sleeping ones wake up at periods and make their final journey to try and find an egg and have a longer overall lifespan. The idea I suppose is that there's always waves of active swimmers present for a longer period after DTD. I think the really keen ones can get to the right spot in less than 30 minutes.
Up to 2 days afterwards is the higher number of swimmers and the best chance. I think in the 3-5 day range there aren't as many sleeping ones left so your chances are getting lower each day.
B456 if you ovulate 3 days after the +OPK then yes you would miss the actual day of ovulation, but as you DTD the previous day it should still be covered by that. I suppose you could customise it a bit to suit the way you know you work.
My personal thoughts are if you want to try really hard, the best days are the day before and then the day of O. And then because the actual day might be a day or two either side of where you expected it to be, its good to DTD every 2 days before and after for a bit as well. This ensures that if you ovulate when expected you have hopefully got heaps of swimmers, and if you ovulated a day or 2 out, there will still be heaps. And if you really want you could also add DTD on O-2 and O+1, but this would leave you a bit tired (5 days in a row...)
The other advice in the post was good though, especially about the "release" at least once every 10 days thing, as not having this regularly can actually (temporarily) reduce fertility a bit.
Reply With Quote
Bookmarks