Dear Welcome to HCM We understand your concerns I went through your details. I suggest you not to worry much. Let me assure you, if this has to do anything with low blood sugar level, then there should be other symptoms like sweating, nervousness, shakiness, extreme hunger, headache, blurred vision etc. I think you do not have any of these symptoms except nervousness. Still, as you are having doubt, do consult a physician and get your blood tested. In my opinion, this could surely be anxiety disorder. Just sit and try to remember. What happened since last two year. Any death in the family, any fatal diseases, stress, workplace quarrel, family problems? At this age, most people gets to know life as it is. That could also trigger anxiety. 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.