Yes don't freak out, but you need to contact your doctor and have it looked into just incase. Simply taking prenatals won't normally make your stool black.
It cud b internal bleeding!!..c a dr about it!!
My prenatal vitamins have iron in them
Are you taking iron pills? That could be the issue. Nothing to be worried about.
Never google your symptoms!! Are you taking any iron supplements? I got put on iron tablets because of iron defficentcy so my stool is black it just shows that they're working