Changing prenatal pill brands

Hi everyone.

Me and my husband are trying to have a baby so I’ve been taking prenatal pills for sometime now (around a year) in preparation of pregnancy. Unfortunately we miscarried in the beginning of the year. We are still trying to conceive and I have been taking the same brand of prenatal pills for a long time now (i didnt start out taking them but I’ve used this brand longer then the previous one) but now I’m noticing it’s becoming a little hard to find the exact prenatal pill in stores and even on amazon. Is it a big deal to change prenatal pill brands? Being that I’ve been using a certain brand for so long and never know when I’ll come out pregnant I wonder if changing brands is a big deal or does it not matter what brand I take because it’s just a vitamin.