Uy, normal lang yan sa late pregnancy, sis! A few of us sa mommy group namin nag-experience din ng ganyang excessive cold sweats especially towards the end, it's likely hormonal changes and your body preparing for labor, pero since you're already 37 weeks, best to mention it sa OB mo sa next checkup para ma-rule out kung may iba pang concerns like blood sugar or infection. Try to stay in cool areas, wear breathable clothing, at hydrate well kasi lumalabas ang maraming tubig from sweating. Hang in there na lang, almost time na!