Dear Welcome to HCM We understand your concerns I went through your details. I suggest you not to worry much. You are just having simple anxiety problems. You are having these symptoms mainly because you are either not prepared for the presentation or worries that you may not do well with the presentation. If you had these feelings before, the first time you had to deliver a presentation, that anxiety could have carried forward. Do not worry. you have presentation experience now and the symptoms should go away 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.