I have a tooth with a filling that normally never bothers me.on halloween i had some candy, and since then i feel sensitivity.will this subside?

Maybe : Tooth sensitivity may or may not be associated with a cavity. Generally, if the sensitivity consistently occurs when you eat or drink, it's safe to say you should see your dentist. You may want to see if the sensitivity goes away if only minimal. However, if it has lasted for a few days as your question suggests, an evaluation is in order. A more thorough answer could be provided with more info.

Have it looked at...: A tooth will a filling that is sensitive to sweets may be "leaking", especially if it is cracked or the filling is old. Nevermind that it normally doesn't bother you. A new filling is less invasive and less expensive than root canal therapy and a crown.

Hard to say: The sensitivity may last for awhile and go away. But the candy may have damaged the tooth, filling, or both. If the symptoms remain for over 10 days or so or get worse, then see a dentist.

Tooth sensitivity: get your tooth checked ASAP. You may have decay or a broken filling.

See your dentist: Sensitive teeth on sweet may indicate a serious dental problem. Do not ignore the pain it won't go away on its own. See your dentist to find out what causes tooth sensitivity and the treatment options.