Could Nausea Be Due To The Side Effect Of Amox-clave?

My 18 year old daughter has been sick for aprox a week with congestion slight cough but mostly headache and I took her to dr Thursday and they prescribed aprox-clave for sinusitis. She is very nauseous for the past 2 days and is feeling very sick not able to do anything. Should I have her stop the amox-clav? She is still congested. She also has Crohn's disease and is on Remicade infusions just started in July on this medicine was previously con Humira