I think it your hair being "missing" makes you feel weird. That's a pretty dramatic cut. And once you got the weird glasses on, whatever you look at is going to be weird. Which means now you think your body is weird.
Don't worry about it too much -- you will get acclimated and stop feeling weird.
If it helps, I got my haircut this weekend too. It went from straight shoulder length to a long layers fluffy chin length thing because I was getting too hot to have longer hair.
My weirdness is that I keep seeing me in mirror going "Whoa! I turned into my MOM in her 30's with one haircut! Ack!"
I'll get over it too.
A.