Vitamins

Morning all, I’ve just found out I’m pregnant with my 6th baby, i have five children aged 13, 11, 8, 3, and 2, I miscarried in July last year so want to make sure I do everything by the book. I’m 38 as well and as “an older mother” I want to ensure I’m doing the best to make this one stay! What vitamins are everyone taking, I was just taking folic acid and this was first month trying so a bit of shock when actually happened so which vitamins does everyone recommend? I usually take pregnacare but I see there are two other versions of this now so are these better, same, worth the extra money? Tia x