Fever from 5days for eight months old.

My 8 month old baby has fever, cough and cold from past 5 days. It started quickly on a fine night with a weird cough. Initially we thought she swallowed something, but on checking nothing was inside the mouth and temperature was 100.4. We have paracetamol and she was fine. But sounded cold. She had high temperature and cold for the next three days. Temperature rised only during night then. From yesterday she started showing high temperature even during day time. Today temp was 101.8. it reduces to 99 when we give paracetamol but again raises by 6-7 hours Nobody else in the home has cold or fever. We started antibiotic yesterday night. Blood and urine was tested all were normal. She bites everything she gets. Is this related to teething,she has zero teeth's so far. Is there anything to worry. It's been five days. And we have to travel tomorrow.