question: Trying to figure out if my 18 year old daughter has an underlying health issue. She has been spiking fevers and has been sick 4 times in the last 5 months. Twice in the month of February. As recent as last week after taking a swimming test to be a lifeguard (which she passed). So we ve noticed that it may be after exertion. At first we thought maybe because she was at college, exposed to a lot of bugs, but has happened now since she s been home too. Symptoms