Prenatal Pills

Have any of ladies noticed that you're a bit more moody when you're taking prenatals?

I blamed it on being postpartum and then chalked it up to my cycle returning. However, a few days ago I ran out of my prenatals and decided not to repurchase (we won't be TTC until next year and I'll be weaning from nursing in a few months). Ever since I've stopped taking them my mood has been completely different and I feel more myself again.

I'm curious if it is just because I've been postpartum for almost 9 months now, or did it have to do with the prenatals...