I'm sorry to hear you're so worried about your health.
Amyloidosis is a very rare disease, and it is unlikely that you have AL amyloidosis if your blood and urine tests are normal. It is reassuring that amyloidosis was not seen in the endoscopy biopsy. Gastritis and cellulitis are not linked to amyloidosis. CT scans are not diagnostic for amyloidosis, but it is reassuring that these were normal.
Carpal tunnel syndrome is common, and occurs far more commonly in people without amyloidosis.
I recommend that you ask the haematologist about your concerns, including your swollen shoulders and enlarged tongue. If the haematologist thinks that amyloidosis should be ruled out then they can contact the NAC doctors to consult about your case, or refer you to the NAC.
I hope that you find the answers you are looking for about your health concerns.