This happened to me before too my son. Don't smoke out of pen caps. Use an apple at least. And remember this always. It is impossible to overdose on marijuana. Nothing bad will happen to you. And remember just to mellow out and keep focused on the things that make you happy i.e music, family guy, whatever you kids like to do.
Trippin out on herb is just a waste. Alot like sleeping or passing out. Make sure to stay positive throughout and ride it. Remember, its just herb my friend.