Your bike will be fine, the chain probably just stretched out. Try not to worry about your work. It's going to be fine. You're just freakin' out because you've got too much free time and the excitement is mounting.

Repeat after me...

Oooooooooooooooooooooooooooooohhhhhhhhhhhhhhhhmmmmmmmmm

Do this many, many times. You'll feel so rediculous you'll forget about everything else.