What additional evaluations can you do prior to other testing?

Mrs. Willis a 52-year-old Caucasian female presents to clinic with right upper quadrant pain for four days. The pain radiates to her right shoulder. The pain is described as 8/10 and is now constant, becoming worse after eating. She also complaints of frequent nausea and vomiting.
Her vital signs are: Blood pressure: 132/97, heart rate 92, respiratory rate 17, oral temperature 99.2 (o) Ht. 5’4” weight 162 pounds

1. What additional evaluations can you do prior to other testing?
2. What are your differential diagnoses? Include the pathological process involved with your diagnosis. What tests would you order to confirm your diagnosis?What treatments or interventions would be the first line of protocol for your diagnosis?
3. What treatments or interventions would be the first line of protocol for your diagnosis?