Pain under right rib cage

[Legend13]

This is a bit of a long explanation I’m afraid. I suffer from celiac disease, although I very rarely get any symptoms. Around 3 months ago I started to get pressure in my rectum along with a dull ache under my right rib. I just presumed it was my celiac disease so decided to sort my eating out as I wasn’t exactly sticking to the gluten free diet. Since then, the pain under my right rib remains but it often spreads down my right hand side and I often get a bout of burping. I also seem to get stomach cramps every now and again aswell. I’m fairly regular to the toilet (2-3 times a day) no change there. I have had a liver function test aswell as a full blood count and all came back normal. Iv had an ultrasound of my liver, gallbladder and pancreas and they have all come back normal. My doctor seems to think it may be a stomach ulcer, although she has admitted herself that’s shes not overly sure what’s wrong. I’m now 3 months later and still this pain on my right hand side and under my ribs remains. Just wondering if any of this could be IBS related? It’s not a condition I know too much about.