You should avoid unnecessary medication during pregnancy
unless it is absolutely indicated. I do not understand why she has been put on tab. Cefixime
unless she has some localising symptoms suggestive of infection
somewhere in the the body. The short febrile illness of 3 days duration looks like viral in nature unless there are some localing signs & symptoms and just give tab paracetamol
500 mg as & when required if fever
goes up > 100.5 degree celsius. If the fever still persists more than one week, then consult your physician & get her investigated.