<s>[INST] Hello, I have a flutter sensation (almost pulsating) feeling on my upper right side just bellow my ribs. There is NO pain and this pulsing sensation does not go along with my pulse. I am not pregnant and I am a healthy 25 year old female. Do i need to be concerned??? [/INST] Hi, It could be a costochondritis. As of now you can use analgesics/anti-inflammatory combination like Aceclofenac/Seratiopeptdase for symptomatic relief. If symptoms persist, it is better to consult a physician and get evaluated. Hope I have answered your query. Let me know if I can assist you further. Regards, Dr. Shinas Hussain, General & Family Physician </s>