Hi I am 33 y/o male. I've had left side pain (front near ribs/side) for the past 3 months now. The pain comes and goes, seems like it gets worse after I eat too much, sit in certain positions, lie in certain positions etc. CBC and urinalysis are normal. Ultrasound of stomach area didn't find anything abnormal.
What could this be? If it is muscle strain how come it isn't getting any better? Are there other explanations?