I have mild to moderate pain on my left side, just under my breast. The pain is worse when I bend over, turn my head to the left, or when I m sitting for long periods of time (such as driving). The pain goes away when I am standing or lying down. I am currenty being treated for a yeast fungus (left axilla), and two weeks ago I had a colonoscopy. I have also been belching a lot (belching is rare for me).