It could be the start of a cold sore. They start out with little bumps, and get itchy or tingly sometimes. Try your best not to scratch or rub it, as that will only make it worse. Get to a drug store, and ask the pharmacist for his/her advice. Until then, you can try a paste of baking soda and water to stop it from itching. If it starts to spread and get worse, then you should see your Dr., to get something to stop it from spreading.
