This probably happens between 1 and 3 in the morning? I would suggest taking Milk Thistle from A.Vogel to support your liver and help it return to normal function. This should help with your night sweats. If you are between the ages of 45 and 55, it could also be the beginning of your menopause. Rhodiola Complex from A.Vogel would then be a good option. It will help recover from the stress of surgery and support proper production of hormones in the post-menopausal stage.