I've had pain, tenderness, lack of appetite and, what feels like, swelling in my upper and mid abdomen now for a few days. I've tried things to help but nothing seems to really do anything.

Not sure if this is just IBS really playing up or something more serious :(

I'm going to give the GP a call in 15 minutes when they open and make an appointment to see what they say. Not really sure what else to do.