Ay sis, 5 days pa lang kaya normal pa yan sa postpartum, lalo na kung heavy ang bleeding mo or hindi ka kumakain ng maayos! One of my mum friends kasi was so dizzy din because she wasn't drinking enough water and nag-skip ng meals while breastfeeding, tapos kumita lang siya ng iron-rich foods like spinach and red meat. But please check with your OB agad especially kung ang hilo ay sobrang intense or may kasama pang shortness of breath, better to be safe, hindi ba?