Freezing cold in Spring?!?!

Yup yup. It is really freezing now. About 5 degrees - latest weather report on Channel 9. Scary~ I was so cold while I was studying in my room. I had to switch on my heater occasionally coz of my freezing feet and hands. And the "best" thing now is that I am feeling a bit weird. A little feverish. A little nose-block. A little headache. A little cold feet and hands. Oh no. I don't want to be sick now. I got to revise for my exams and I need to memorise lots of stuff. I hope that it is all a false alarm. I wonder if it has got to do with the sandwich I bought in school. Coz I got tummyache and diarrhoea after consuming it. Symptoms of food poisoning? Hmm. What could cause me to have diarrhoea? Maybe S. aureus coz it is commonly found in deli sandwiches, especially when the food is not hygienically prepared. Or could it be yeast and mould that grows on cured meat? coz I bought the wrong sandwich which has salami in it, but I didnt really eat that. Maybe not. I suspect it is the lettuce which I ate, maybe it is the source of S. aureus as the vegie is not properly washed. Or is it because the sandwich is placed on the shelf too long and all sorts of microbes began to grow? Haha. u must think I am crazy rite? Nope. I really had diarrhoea yesterday. The analysis of the cause is real too. I am just practising doing quality assurance on food products and putting my food microbiology into good use. Haha.