Hi! I'm a 28 year-old female, and for the last 5 months, I've had back and side pain on my right side, just below my ribs. It ebbs and flows throughout the day, and is made worse when I drink a lot of fluids or if I lay on my back for a prolonged time (sleeping). If I lay on my right side, I immediately get very nauseous. I've had a blood test, urinalysis, CT scan, and ultrasound, which all came back normal. My doctor's out of ideas. Any thoughts?