I am 67 and for the past year or so just break out in a sweat, my head gets hot and I get soaking wet. Had a total hysterectomy at 40.?

Possible. A total hysterectomy means the uterus and cervix was removed but does not indicate if the ovaries were removed. Other conditions can cause your symptoms: hormonal issuse such as thyroid conditions, infection, other medical conditions, medications,menopause,....Discussed further with your doctor.