Any IVFrs Out there? Or Just Plain Smart People...

Does anyone know how the IVF calendar is calculated as far as the due date is concerned? Specifically do they count the beginning as the day they fertilize the egg, (which appears like the actual conception date to me) or the day they implant the embryo back?  I was wanting to do one of those calendar things for myself and I'm not sure how to count the time but I'm pretty sure its different then the last AF, date.  Any help would be appreciated.  Thanks guys.

Go to babymed.com and you can plug in your info based upon transfer day (and how many days it was, 3, 5, etc.)  

Then you can create a ticker on any site after getting your due date. 

Thank you!  I am forever in your debt.  Well at least until the next time you save me!!!