I have had the chills and night sweats in the past. Back before the doctors knew the name PCOS, they classified my symptoms as pre-menopausal. Now I have to laugh because I was only 19 at the time. No laughing matter back then. Sometimes my symptoms are worse during AF and even if I don't have AF for a month I'd still get the chills/sweats around the correct time. Very weird! I haven't noticed the chills/sweats in a few years.