Infant fever

My 7 month old baby has had a fever for 2 days now It is really richest to 38C but it is just one time and the other it is just 37 something. And also she has rashes on her neck only and she is so very matamlay, I already give her paracetamol. It is her first time to have a fever. And i am very worried, is it right that we just stay at home?