<s>[INST] Having a pulsating/spasm feeling in the left side of my abdomen. It s not painful and sort of just feels like a muscle spasm. It s not constant, but when it happens it feels like its in sync with my heart. I m just a little nervous since the only thing that s coming up when I search my symptoms is aortic aneurysm. Should I be concerned, or is it probably just a muscle twitch? [/INST] Hi, It could be a simple musculoskeletal pain. As the first line of management, you can take analgesics like Acetaminophen or Diclofenac for pain relief. If symptoms persist, you can consult a general physician and go for an ultrasound abdomen. Hope I have answered your query. Let me know if I can assist you further. Regards, Dr. Shinas Hussain, General & Family Physician </s>