Hi ! I am Dr Shareef answering your query. From the history, it seems that you developed this problem related to your nervous system while you were on some kind of ayurvedic medications (like your head turning to right while breathing). Possibly the same problem has continued to stay in the way of stuttering problem and the injection could be just a coincidence. I would advise you to see a neurologist in your area to rule out any neurological problem. I hope this information would help you in discussing with your family physician/treating doctor in further management of your problem. Please do not hesitate to ask in case of any further doubts. Thanks for choosing health care magic to clear doubts on your health problems. Wishing you an early recovery. Dr Shareef.