So I've been a little worried about something for about a week and I have had NO appetite whatsoever. I usually have a big appetite and eat 5-6 times a day, so this is really weird for me. I've been forcing myself to eat SOMETHING, but its usually only 200-300 calories a day. I feel sick if I don't eat and sick if I do eat. Is it just because I'm stressed or am I really sick? What should I do?