u/Ice_but_uncool

24 year old male; I’ve had mild tenderness/soreness on my right flank just below the rib cage for a while now. It feels similar to muscle soreness after exercise rather than sharp pain. It’s mostly noticeable when I press on the area. I do work out regularly, so I thought it might be a muscle strain, but it has lasted longer than normal workout soreness. No severe pain, fever, vomiting, or urinary burning. I do have a history of kidney stones though. But today, since morning I feel like its more swollen and I can feel it even without pressing. What could it be? Should I really see a doctor? Can it be the gallbladder or liver?