15 weeks: Vitamins

Hello, Mommies! First time mom here kaya mej nagpapanic pag may nararamdaman or changes. Ask ko lang meron din ba sa inyo nagte take ng ganitong vitamins? Meron ba side effect? Like iba kulay ng poop? Sorry if mejo off. curious lang and at the same time kabado. Nung 1st trimester ko kasi, niresetahan ako ng OB ng pampakapit and antibiotics for UTI. But thanks God ok naman na, and malikot si baby based sa ultz last time.