We were not trying to use Shettles, but we were charting so I know when I conceived and the general principle held true.
Exactly this, although I think there is more to Shettles than just timing. There are websites with message boards dedicated just to this so you may want to look for those.
Re: Did anyone try Shettles and it worked?
bfp#4 3/19/2014 edd 12/1/2014 please let this be the one!
beta @ 5w0d = 12,026! u/s 4/22/14 @ 8w1d it's twins!
Exactly this, although I think there is more to Shettles than just timing. There are websites with message boards dedicated just to this so you may want to look for those.
This, with DD. I didn't chart with DS so I don't know, but the theory was correct for us with DD.