Oo, normal yan sa second trimester! A few of us went through the same thing, yung hormones, blood pressure changes, at paglaki ng baby talaga nakakahilo. Pero kung sobrang severe na or hindi ka makapagsuffer, better check with your OB na para ma-rule out kung walang iba pang concern, kasi gusto natin ma-manage properly ang pregnancy mo para okay ka at ang baby.