Raynaud's often goes hand-in-hand with autoimmune diseases as well. My mother suffers from me, me and my bro both do, and it suddenly sprung on my daughter as well this winter, just on two fingers of one hand - right as she was starting to get sick.
My feet and hands are constantly iceblocks, even with a little heater in my office. THe hand I use to operate my mouse is the worst. I take a hot bath every night just to warm up my core, otherwise I can't fall asleep because my feet just won't warm up enough to let me relax no matter how long I'm under the blankets.
Hot water bottles are wonders. Or heating pads. My little brother knows that when he starts getting that bone-chilling, aching coldness, he is headed for the hospital very soon. Often ppl report being constantly too-cold-to-get-warm right before they get extremely sick with chronic disease. Check on yourself. ONce you figure out how to keep yourself normally warm, if you notice those tricks aren't working, or you're having to employ all of them at once (hot bath, then hot water bottle diving straight under the covers the moment you exit,, and you STILL wake up cold a few hours later - that kind of thing) it's time to get some bloodwork done.
