About half way between my belly button and rib cage, on the left-hand side, there is a tender spot that when pushed, I feel a very, very sharp pain. The discomfort from me pushing it will travel up through my left rib cage and back area. I do not feel any hard lumps and/or bruises and nothing is swollen. I first felt this a few months ago, but then I feel like it subsided. The pain came back about a week ago. It s causing some constant discomfort, not to mention concern. Any ideas?