Light headed, tight chest, panicy feeling, overwhelming feeling. had this for a few days. could this be anxiety?

Yes this could be: All the symptoms you've listed are consistent with anxiety.

Most likely: Stress could be one answer. These sound like anxiety when they all occur at one time See your doc if needbe but try to get yourself under control. At your age medicine is not always the best answer.

Yes given the sudden: Panic disorders, a variant of anxiety, can come on suddenly mainly in physical symptoms that feel unusual and have no previous history. The light headedness , tight chest and and panicky feely may be the result of hyperventilation that is consistent with restricted breathing and is a common involuntary reaction to anxiety. Our tendency can be to "freeze" when we feel threatened or off balance.

Yes. There are 33: Sx's of anxiety and you just described four of them. So consult with an MD to eliminate any possible physical causes, but if this is truly a psychological condition, then seek out a psychologist. At your age, there are many, many things that could cause this. Here's a primer in the meantime: http://www.psychologyproductsandservices.com/page2.html This is for adults, so ask your parents...