Hi. My 6 Year Old Daughter Has A Temperature And

Hi. My 6 year old daughter has a temperature and feels sick. Had a sore throat in night. Brought up clear liquid in night and this morning and still feels Sicky. Shes really hungry and I've boiled water and when cool was going to get her to sip it. Has had cool water already but it didn't stay down for long. Had same symptoms 2 weeks ago and was really sick then felt well after 24 )hours. Not sure whether to just wait till she's stopped feeling sick and give her some dry toast and just keep eye on her. She looks pale but she's chirped up a bit. Little headache. No rashes. Any advice please? Thank you. Debbie