Dear Welcome to HCM We understand your concerns I went through your details. I suggest you not to worry much. Regarding your concentration. If you are able to watch an interesting movie, for two hours, then you have no serious concentration problems. If you can play an interesting game for half an hour, you do not have any concentration problem. You are worried about the result, and therefore you are stressed and anxious. Anxiety and concentration are born enemies. Reduce anxiety. If you study you pass, other wise fail. If you fail, you do have other options. Don;t worry about the outcome, emjoy the knowledge you gain while you study. For your numb finger and hemorrhoids you should consult a neurologist and surgeon respectively. They should be able to provide you good treatment after proper evaluation. For that evaluation, you should visit them personally. 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 the needed psychotherapy techniques which should help you cure your condition further. Hope this answers your query. Available for further clarifications. Good luck.