Pre natal vitamins with Mum’s formula

Hi, anyone knows if I am able to take pre vitamins together with pregnant mum’s milk formulae within the same day? I would prefer to give my baby more nutrients but I googled & it says if overdose of certain vitamins/folic acid will bring harm to the foetus instead which scares me. I am still in my first trimester & my first gynae appointment would only be when I am near 10weeks.So I have to buy folic acid and supplements myself before heading any advise from the gynae. Mummies, any one?