Originally Posted by
KM84
Yep, that's right janellody!
Most people don't chart, so they don't know their exact O date. Because of that, the first week of the 40 week pregnancy starts CD1.
You can calculate your DD from either the date of your last period, or your O date. If you have an "average" cycle with O on CD14, you'll get the same date. But since I have longer periods and didn't O until CD17 (and that was EARLY for me!) I used my O date to calculate.
Did you set up FF's pregnancy tracker? It's pretty bare bones, but it tells you what week/trimester you're at, and lets you calculate your DD. I actually prefer it to some of the others, because it's not trying to sell me a bunch of crap (cough the bump).
Oh and hi! I finally decided to wander over from TTC. I'm afraid this may be a chemical pregnancy, but we'll see how the next week goes for me.