You may talk with your physician about gallbladder removal pain syndrome, when patients still experience pain and other symptoms of gallbladder inflammation even after the gallbladder is removed.
Mainly, involves the right side of abdomen, but, some patients complain about various abdominal and chest pains.
Pain, located in the upper left abdomen that may spread to the chest and back, can be a case of pancreatitis.
Ask your physician for pancreatic functioning tests.
It is good idea to check your thyroid gland, too.
Rapid weight gain, with increased levels of cholesterol and triglycerides and high blood pressure, can be signs of hypothyroidism (underactive thyroid gland).
Having high blood levels of cholesterol and triglycerides is one predisposing factor for pancreatitis.

Best wishes!
Marija