For the past few weeks, I have been experiencing upper left abdominal pain. The pain is slight and it comes and goes. Sometimes I also experience bloating, belching along with the pains. The first time this pain occurred it seemed almost like a runnerâ€™s pain, you know that feeling when you run fast and get a pain on your left side. The pain was dull and it would last for most of the day. Sometimes like today I feel that weird pain or discomfort on the upper left side and it almost feels like gas today. I have had IBS for several years now. So just as a precautionary measure I visited my Gastroenterologist and he thinks it may be a functional problem so he advised me to up my dose of my anti-spasmatic medication and sent me for an abdominal sonogram. Has anyone experience this? Could this just be another form of the side effects from IBS? Thank you for any advice or insight on this.