A 27-year-old female presented to the clinic with an 8-week history of persistent nausea and vomiting, especially in the morning. She initially thought it may be acid related, so cut out acidic fruits and drinks with no improvement. She also took ranitidine twice daily for 4 weeks with no improvement. She confirms an 8-week history of nausea, with intermittent vomiting over the last 2 weeks. She describes a vague abdominal discomfort in the upper epigastrium with no radiation. She has been experiencing acid reflux since the vomiting started.

She has noticed her stool has become harder and less frequent but considered this due to her reduced appetite and oral intake. Her weight is unchanged. She is sexually active and on the oral contraceptive pill. She had her last withdrawal bleed 1 month ago. There has been no recent travel or contact with the infection. She alcoholic and non-smoker.…