Join Date: Mar 2002
Location: Northampton, MA
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I think it varies from person to person, but I know that I usually had (back in the day when I was keeping track) 3 days of EWCM, and it was generally on the last day that I would get a positive on the OPK (meaning ovulation would occur in 12-36 hours). So, I would probably actually release an egg (or 2!) a day or 2 after my last day of EWCM. This is the perfect set-up for people using fresh sperm because the sperm has those 3 days of EWCM to travel through the cervix and make its way into the uterus where it can await the egg (ideal conception scenario involves sperm already waiting when the egg is released). Fresh sperm lives for at least 3 days (and possibly up to 5-6 days), so its got plenty of time to hang around.
The set-up is a little less ideal for those of us using frozen sperm because the process of being frozen and thawed shortens the lifespan of the sperm down to just about 24 hours. So you've somehow got to figure out how to both inseminate early enough that you still have *some* EWCM to help the sperm through the cervix, but late enough so that the egg will be released before the thawed-sperm die.
So, to answer your question directly, YES, ideally you would do both of your ICI/IVI inseminations while you still had EWCM, but that timing method usually disagrees with the OPK timing method. So it's confusing. That's why my suggestion for you, doing two inseminations, would be to try and follow both methods. If I were in your shoes, I'd do the first insemination on my last day of EWCM (this requires you knowing how many days of EWCM you usually have), and the second 24 hours post positive OPK. One method increases the chances of the sperm getting through the cervix easily, and the other increases the chances of the sperm still being alive at the time of O. And you can just hope that the sperm who got there too early live longer than average for frozen sperm, and that the sperm from the second insemination can make it through your cervix OK even if you don't have any EWCM left. Of course, it's entirely possible that YOU get a positive OPK on your first or second day of EWCM in which case I would go by the standard OPK timing method.
I'm just theorizing now, but I would guess that women who ovulate while they still have EWCM or closer to the time of positive OPK would have a better chance of getting pregnant using frozen sperm and ICI. I actually never even tried ICI myself; we read that IUI was more effective when using frozen sperm (which makes sense since you take the need for EWCM out of the picture) and decided to jump right to it.
Mindfully mothering SIX kids (ages 5, 6, 8, 9, 11 & 11) in a small house with a lot of love.