Dear Welcome to HCM We understand your concerns I went through your details. I suggest you not to worry much. Worrying and unnecessary thinking always creates anxiety. Of course, anxiety is stress related. You have not given your age. In any case, you are definitely anxious. The sudden high feeling is called panic attack. Panic always comes to people with anxiety disorder. You can confirm that you have anxiety disorder if you have atleast half of the below symptoms. Are you constantly tense, worried, or on edge? Does your anxiety interfere with your work, school, or family responsibilities? Are you plagued by fears that you know are irrational, but can’t shake? Do you believe that something bad will happen if certain things aren’t done a certain way? Do you avoid everyday situations or activities because they cause you anxiety? Do you experience sudden, unexpected attacks of heart-pounding panic? Do you feel like danger and catastrophe are around every corner? You should analyze the cause of your problem. Consult a psychologist soon. If you require more of my help in this aspect, Please post a direct question to me in this website. Make sure that you include every minute details possible. I shall prescribe some psychotherapy techniques which should help you cure your condition further. Hope this answers your query. Available for further clarifications. Good luck.