Oo, normal lang yan sa pregnancy, lalo na around second trimester mo kaya feeling mo parang cold kahit mainit pa sa labas! Your body is working extra hard kaya metabolism mo tumaas, but at the same time hormonal changes can make you feel chilly, it's one of those weird pregnancy things na parang contradiction pero totoo talaga. Keep a light blanket nearby lang, pero kung super severe na or may iba pang symptoms, best to mention it sa OB mo next visit para peace of mind mo.