Brendon has been feeling really warm for the past day or so, I took his temperature last night and it was 40°, I gave him medicine and it went down a bit, I've given him some more medicine this morning and checked his temperature an hour later and hes 37.8°. He's got a bad cough and keeps doing this weird head shakey thing too. What should I do? Should I keep giving him medicine when he needs it or ring 111? 😥