He was pretty ill at the end of the summer term, responded well to anti-biotics so wasn't hospitalised. However he seems very out of sorts still, prone to sudden bouts of exhaustion when he looks white as a sheet. Next day he can be fine and bouncing around again. He has had a couple of colds and/or random temperatures since too, whereas pre-pneumonia he was never ill. He has had bloods checked and all seemed ok, but he is very low energy an awful lot these days. Is this normal this long after a nasty illness or should I see GP again?