My 5 month old son

Rebecca

My 5 month old son has had a temp of 37.3 and 37.9 keeps goin up and down he's screaming everytime he's awake like just when he's awake he's hardly sleeping he's not him self at all iv give him everything he can have calpol and teething gel obvs not all at the same time and nothing helping him gonna ring docs in morning but wat do u guys think it might be