Prenatals when TTC???

Krystal • Mother of 2 from previous relationship. Newly married o5.15.15, lost our angel 3.12.15 and TTC #2. Impatiently waiting on our rainbow baby!
When taking Prenatals while TTC, does it matter what form you take it?? EX: my OB gave me these big a** horse pills that make me nauseas! So now i take gummies i found at Walgreens. Will i get the same results? Why is it important to take them do early if you're nit preggo yet??