Endoscopic ultrasound and MRCP might add something as they are able to find small abnormalities. Try investigating patient financial assistance at a US Pancreatic Center of Excellence. The National Pancreatic Foundation lists the centers. Might have an idea for you as to how to pursue an expert opinion. Check for patient financial assistance at the hospital website and see if it would apply to you. Lack of access to a pancreatic center of excellence is a problem even in the USA so you certainly have plenty of company in the search for expert care.
Anxiety can be very debilitating and interfere with getting on the right track. Treatment for anxiety itself might improve your quality of life. No shame in health anxiety!