(giggles) No problem, Justantine! I'm sure it happens to everyone at one time or another. I'm just getting back into drawing since June of this year! That was a long slump.
Take a break. Look at stuff on the internet or something that might pique your interest and give you inspiration. Or look at pictures or cards etc.
Most of all, don't push yourself if your body is saying "hold it!" for a spell. Nothing wrong with that.
Good luck!