While Hissy's opinion is respected, I disagree with bringing your pet to a vet just because the cat is licking stuff.
Bringing your cat to a vet involves putting him/her through a great deal of stress, and potentially exposes him/her to feline ailments, which can be deadly, such as the mutant virus that struck Los Angeles a few months ago at vet clinics and infected and killed something like 24 cats who just went for routine checkups, but contracted the virus there.
I don't feel licking everything is a sign that a major physical problem exists, and would suggest PHONING a few vets and asking for opinions verbally. If they (and you) then feel it's necessary to see the cat, proceed accordingly.
This is what I spoke of earlier, how people subject their cats to possibly more harm by overacting to every little thing and bringing them to the vets, where FAR worse things can happen.
Again...cats are very strong creatures, even though domesticated. Give their bodies a fair chance to deal/adjust with/to situations. BUT...talking and asking for advice is ALWAYS a must thing.
I happened to be at a cat clinic today, and the girl who was taking care of sick cats (visible through a window in the lobby area) suddenly came out without washing her hands and started playing with cats in the lobby who were waiting to see the vet. That kind of carelessness is exactly how diseases are innocently and quickly passed from one animal to another, and the very reason I am VERY cautious when placing my cats in the care of others, even temporarily. My cat never leaves my sight, and I always remind everyone to wash their hands before touching me or my cat (when at the vets.)
Just food for thought.