Dear Welcome to HCM We understand your concerns I went through your problem description. Feeling sick in stomach and having vertigo is too common to clearly diagnose the problem. But I do think that you might be safe, because now you are feeling well. Stress is everybody s state of mind. Whenever we are compelled to do anything which is beyond our actual limit, we get stressed. Such stress feeling and body tiredness should go away after you take proper rest, body as well as mind. That is it. Don t worry unnecessarily and take unwanted medicines. Self diagnosis can be dangerous. Hope this clears your doubts. Available for further clarifications. Good luck.