Can Low Iron (20) Cause False Negative Pregnancy Test? Period Type of bleeding though no clots but heavy watery blood. 3 days. Normally 5-8 menstration, and normally a lot of bad period pains these 3 days I’ve only had very mild discomfort. Feeling very heavy in the stomach and nausea randomly, tender breast. Gag reflex is more than usual. Pants around waist cause discomfort in stomach. Bloated.