A 48-yeаr-оld femаle presents with nаusea, vоmiting and RUQ pain radiating tо her back for one day. She reports a history of similar episodes but none has ever lasted this long. Her vital signs are HR of 108, BP of 145/90, RR of 20, O2 saturation of 98% and temperature of 100.8F. Her labs reveal the following:WBC = 14.0 x 10^3/mLAST = 55 U/LALT = 60 U/LAmylase = 70 U/LLipase = 7 U/LWhat is the most likely diagnosis?