Sick of the pain!!

I need to vent or I'll implode! I've been in pain for weeks and I'm now in hospital, they say they can't find anything on the scans but that doesn't help me and the fact I can't breathe eat or sleep with the pain in my back/abdomen! They're talking about sending me home but what's the point when I'll be back in a few days because of the pain and I can't keep fluids down so the point of giving me oral meds is what? It's the worst thing I've ever experienced and I have a very high pain threshold. I'm just so fed up of the pain and being told they don't know the cause. At least if I knew what it was I could do something.

Update: I'm on antibiotics for a water infection and waiting results of scans, they say it could be gallstones but the pain is under my rib on the right side and in my back at the right and in the bottom right side of my stomach. It comes in waves and it's excruciating