I recently started having the odd caffinated drink after years of not.
Yesterday I ended up having 5 large, strong coffees over the course of the day.
Last night I was sweating, shivering, shocking headache, nausia, achey limbs. I had to change the sheets twice overnight because I was sweating so much I soaked them.
This morning I've woken up kind of okay. A bit fragile, very tired and a bit headachey.
Could it have been the coffee do you think? Or just a coincidence, and I've got some virussy thing?