Just recovering from an appendectomy (Nov/Dec 2015 - ceftriaxone in the hospital). I went on Amoxy for bronchitis (Jan) and sinusitis (Feb) and I just came off of Amoxycillin and still taking Pantoprazole (since Nov 2015, 40 mg). I've had diarrhea, bloating, weight gain, nausea, cramping, gas since the end of Jan 2016.