I would definitely have your Thyroid levels checked. You could be hyperthyroid, which causes your body to be cold. You’ll need medication for the rest of your life if that’s what it is. I have hypothyroidism with Hashimoto’s and occasionally feel that way. The Thyroid test is just a blood draw, but they did away with keeping it as a regular thing that is checked. You now have to ask for it…good luck!