Dear
Welcome to HCM
We understand your concerns
I went through your details.
Bulimia in itself is nervous related disorder. Over and above you also have high
anxiety. You are unable to sleep, tell your parents. The chest must have been caused by three aspects. Your
vomiting stress, your anxiety and the acid reflex.
You must understand bulimia first. Bulimia is an illness in which a person has regular episodes of eating a very large amount of food (bingeing) and feels a loss of control over eating. The person then uses different ways, such as vomiting or laxatives (purging), to prevent weight gain.
In your case, you are already under weight. I suggest you need psychiatric treatment to cure your problem. Please do not delay.
If you require more of my help in this aspect, please use this URL. http://goo.gl/aYW2pR. Make sure that you include every minute detail possible.
Hope this answers your query. Further clarifications are welcome.
Good luck. Take care.