Hi, my 4 yr old dtr has had a fever for the last 48 hours. I give her Advil very 8 hours and it brings it down to 98,in which she plays and carries on normally. However, she is more tired, complains of headaches , tummy ache, and has green stool normal consistency) with a burning sensation around her bottom. Are these symptoms worrisome or cause of concern? Thank you.