HOT all the time internally since I was the age 10 years old

since I was 10 years old to now being 35 I have always felt internally hot too hot sweating being hot even when its below freezing, I have had scans and test don't and unfortunitly I'm undiagnosed my glands are normal and I don't have thyroid issues my hormones are normal I just don't get it, its really affecting my life I cant enjoy life going out I'm so embarassed to be the only one sweating from the face and back when everyone one else is wearing sweaters, I have to constantly have the AC or fan on, Has anyone heard of experienced something like this?