Ay naku, hindi ka lang! A few of us moms complained about this din, iron supplements talaga ang killer sa stomach, lalo na kung empty stomach mo or kung sensitive ka na talaga. Try taking it with food or after meals, at sip mo ng maraming tubig throughout the day para mas gentle sa sikmura mo. If the stomach pain persists kahit adjusted mo na ang timing, best to check with your doctor kasi baka need ka ng different brand or formulation na mas okay sa iyo, some moms I know switched to liquid iron or smaller doses at sobrang better na para sa kanila!