Newlyweds-ish, Help!

I’m new here and not quite sure exactly where to post this, so guidance would be greatly appreciated! My husband and I have been married for over a year but together much longer than that and are now trying for a baby (I’m 27 and don’t have much true knowledge on the facts) . I’ve heard different theories back and forth on prenatals, and I am just curious if I should be taking these now and what the best one is to take if so, seeing as how we are currently not expecting but have been trying for several months without much luck so far?