You over-analyzed your body which is natural when you think you are dying. For instance, it is highly unlikely that you went numb or your breathing was labored.
Likely all the "symptoms" you noticed were psychosomatic because of the fear allowing your imagination to get the better of your reasoning. Again, very natural when you think you are dying.
The secret to peace is to accept that there is nothing wrong and stop analyzing your body, but if you can't, perhaps therapy will help.
We can't diagnose you over the internet. If you think you might have a health problem, start with your primary care physician. Lots of things can make you feel symptoms. Anxiety attacks are caused by anxiety cresting, so you feel anxious. You seem to be saying here that you get physical symptoms, and then you panic. It could be anxiety attacks, but to find out you have to eliminate all other possible causes. If they are anxiety attacks, you're at the age when mental disorders do show themselves for most people, so if that's what it turns out to be the best possibility of being I would try to find a psychologist who specializes in anxiety treatment and get on top of it. Depression, by the way, is perhaps the major cause of anxiety -- they tend to go hand in hand with many people. It's pretty easy to see why -- depression is a sign of feeling not in control, of insecurity, and if you feel insecure long enough it can lead to anxiety. Now, control in life isn't actually something that can be achieved, but most of us believe it exists and that gets us through. When we lose that, anxiety is what replaces it. Getting on top of it sooner rather than later is the best thing to do. But you first have to eliminate physiological causes so you know what you're dealing with.