vitamins

Hi, ask ko lng po f anu pre natal vits ung iniinom nio 2nd trimester kn po around 16weeks preggy, sbi ksi ob ko pplitan nia po dw ung vits k pg 2nd check up k, kso sa center po aq ppcheck up next, kya worried aq f anu vits pde ko itake pg 2nd trimester n..Thanks po sa ssgot..