Congrats on your pregnancy! Yes, dark green or black poop is actually super common when you start taking folic acid, marami sa amin na pregnant moms ang na-experience din nito, kaya hindi ka nag-iisa haha. The iron content and folic acid can change your poop color, which is totally normal, but since pregnancy involves a lot of changes, mas better pa rin na i-mention mo sa OB mo next visit just to be sure, lalo na kung may other symptoms like cramping or anything off. Stay hydrated and make sure kumakain ka ng enough fiber para smooth ang digestion mo throughout your pregnancy. Congrats ulit!