Welcome to health Care Magic, It is really sad to hear about your sister suffering from Cervical Cancer. Cervical cancer is a prevnetable cancer these days by giving cervical cancer vaccines. Cervical cancer is also a treatable cancer if diagnosed in its pre - cancerous and early stage by doing repeated PAP test. I have written this because i do not want to leave any opportunity to spread the knowledge and awareness about this preventable cancer. However for your sister, Nausea and vominting is very common side effects, which will be better once chemotherapy is completed. meanwhile she must take tablets for nausea and vomiting. There are certain specific anti vomiting tablets for chemotherapy induced vomiting. She must consult her cancer specialist for the type of tablet and best meal suitable for her at this stage. She has to take frequent meals in small proportion, and choose easily digestible but high energy food. Reassurance and psychotherapy is also imprtant to keep her at ease and symptom free. Dr H Hamdani