Yes, I would say that you had episodes of a panic attack. Panic attacks stem from our mind thinking thoughts that are not rational and the what if thoughts that go through your mind. All most every time our thoughts make us think we are in trouble or in danger. The truth is usually just the opposite. We are usually always fine, but the panic feels so real, that it's hard to convince ourselves this during the panic. There are several ways to try and relax during a panic attack, what I find that helps me is deep breathing through the abdomen, and breath threw your nose. Don't breath fast, just breath deep and slow. Also I try and talk my self out of the falseness and unreality of the situation. I usually just tell myself this is ridiculous and in no way am I in danger. When you can tell your self that the reality of the panic attack is just a manifestation that you created it sometimes makes you chill out. But to answer your question I would say yes that what you are experiencing is anxiety or panic brought on by un-realistic thoughts that in most cases is never the reality. Please contact someone about this and get some help with it. I waited too long to get help for my panic attacks and now I am fighting severe agoraphobia. Good luck my friend! Just remember that it's your thoughts that are doing this to you and you are in no real danger.