I have been hurting for 4 years on my middle right side. i had namonya about 4 years ago and i started hurting on my right side about middle and it seems like its behind the rib cage and if i touch it its sore sometimes it feels better but i know its still there it will flare up if i screem or move around to much but it will start feeling better after awhile could this be pluracy or somthing worse please let me know