Apple - Congratulations!!!!!! That is wonderful news for Christmas! How wonderful! Don't worry about it being light. As you said, you don't really know when you ovulated!
Arabelle - sounds like things are going well for you. I get AF cramps for a couple days each week (extremely mild and only lasts a couple hours) and it always freaks me out a bit, but I think it is just the uterus stretching to accommodate that baby!
Merry Christmas, everyone! I hope you all had a wonderful time!
Good luck to everyone in the TWW!