You would get on very well with my DS Cag, his entire life has been maths, he loves it. It will be his degree choice for sure. 
Seems like great advice from the Pediatrician Cath. I would expect most childhood 'normal' (for want of a better word!) illnesses to last about 5 days, or at least see signs of improvement after this time frame. It's also useful to be able to say to your regular GP 'look, this cough and high temperature has now lasted 5 days, I've tried calpol, fluids, rest etc, and it hasn't worked, can you check him please?' Or whatever you say.
So, my spends a little higher than anticipated as I did a fair few jobs on the go today.
£20 M&S on fruit, salad, and reduced stuffing!
£10 Home Bargains, usual shite like toothbrushes, cleaning stuff.
£49 ordering 45 (!!) small pork pies from local butchers. Pie and pea supper for our NYE party, way cheaper than a buffet.
£80 Sainsburys, £60 booze for party, £20 washing tablets, and their 'posh' culinary spices and cooking stuff like harissa paste and umami paste. Sainsburys is great for these, otherwise too expensive I think.
£40 Amazon, linseed oil for the pony and oil for his legs.
£12 Cheeky wipes.
Cash from DH in most cases.
Not speaking to the pony as when I put him back in the field I turned to close the gate and he took off my pink sparkly hat with his mouth and chucked it in the mud. Git.