Thanks guys!!! It's going to be a pretty quiet day, DH and I have spent enough money this month and are going to Vegas on Friday for 5 days, so that's enough excitement for the month.
He actually forgot about it this morning. We'd been awake this morning for about 30 minutes or so, and were getting ready for work, and I eventually I deliberately annoyed him and said "I can do what I want today given it's my birthday".
The look on his face was priceless!