hot in the morning, freezing at night?

I'm new to UC, I've had a previous flare which was presumed food poisoning until testing but this is my first big one, is it normal to feel so hot in the morning and so cold at night? before I would sleep with the window open and a light blanket and now i sleep with a thick duvet wrapped around like a second skin. then in the morning to afternoon I'm sweating bullets, it's been warmer here but only up to 13c, is this a heat/cold intolerance thing? am I going to just become a pool of sweat in summer times if flaring?