I personally don not like FC. I started to use it, but it kept telling me that some of my temps were incorrect temps, and wouldn't let me put them in the chart. It seems really messed up to me. Looking at your FF chart, I don't know why FC would say you ovulated yesterday. Like I said........I really don't trust FC much anymore.

Just my opinion though.
EDIT: I just went back to FC, and it let me put my numbers in this time with no problem. It's saying I O'd on the 18th though, and I'm not so sure about that. Look at my FF chart and see what you think. I'm still trying to figure out how to link FC.