I agree with Skye-Day--many of the postings here have discussed what it's like to have a full-fledged "meltdown" (which is more or less what you're describing), and these are from adults.
Mine feel like this: heart racing, breathing faster, thoughts racing too so I can't focus on anything, and a really intense anger that sometimes isn't directed at anything/anyone specific (although sometimes it is).
What works for me I might not recommend since your parents probably wouldn't like it: I lock myself in the bathroom and pretend I'm punching someone. (Yes, I know how that sounds. )
However, there's something to be said for forms of exercise that are like that--if you have a garage maybe you could get a punching bag. It works in the same way as what I described but seems more like a "workout" than a mere expression of violence.
Of course, when I start to feel this way in public I have to hold it inside until I get home. I've had quite a few years to learn how to do that properly (I'm 31).
If they don't like the punching bag idea, then what Skye-Day and Anomalous174 suggested might be better ideas--who could object to your taking a walk and listening to music?
Hope this helps. Just know you're NOT alone in this, and your doctor doesn't know everything.
Take care.
_________________
The existence of the leader who is wise
is barely known to those he leads.
He acts without unnecessary speech,
so that the people say,
'It happened of its own accord.' -Tao Te Ching, Verse 17