Suggest Treatment For Hot Flashes And Cold Feeling While Drinking Cold Beverages

Spent multiple days in A hospital after surgery, I only had iv bags nutrient bags, and all other items done to me were through a pick line Iv) such as pain meds etc..... Now that I m home and taking nothing I m sweating like crazy hot flashes I feel cold I drink cold beverages and I stay cold I m in no pain at all what is going on with me