Hi there ~ I appreciate your being open about your illness. It is hard to have both these issues, however there is a high comorbidity rate in bulimia with substance abuse disorders. What may explain your particular situation is the electrolyte imbalance that might be causing you to have numbness in your right leg and sometimes chest pain as well. You may need to get an electrolytes check on your serum with a blood draw as well as an ECG. However, it is advisable to consult your doctor for a thorough check up with regards to your general physical health and concentrating on your recent problems with numbness and chest pain. It may be good to see an eating disorders specialist psychologist to get rid of bulimic thoughts. I hope this helps. Take care.