I have had ( for almost a year) a pain in my left side. Generally below my ribs but occasionally lower and very occasionally on my right side. Sometimes it's like a stitch pain , sometimes like an ache. It's always worse when I'm lying down and usually worse if I lie on my right side. ( A hot water bottle helps) I have been examined several times and nothing obvious was found. I've had blood tests, and upper and lower abdominal scan ( all fine ) and a chest x- ray ( fine) . Just recently the pain is worse immediately after I've had a bowel movement. Also it's been a lot worse lately as I've been really stressed, and I've also had fairly frequent diarrhoea. Many years ago I was diagnosed with IBS, but it hasn't really bothered me too much. I do also have LPR  . Sorry for the long post!! I  

Things are settling now that life isn't so stressful and I'm learning to manage my stress but I still have the pain