For last few days I am having a lot of trouble under the left side of my ribs. The problem started after I ate a lot at my friend’s wedding. My wife is totally bewildered with my pain and she is suggesting me to go to a doctor and report about the left side pain under rib cage. Of late, I am also having gas problem, is this problem because of the formation of gas in my belly or am I sleeping in the wrong way? Please help and come out with cool answers.