By definition, if you have a plant that pollinates itself, it is a hermaphrodite.
There are different degree's of hermaphroditism.
It's not uncommon to find a seed or 2, usually buried deep in a bud. Usually when this happens you'll also see the "banana", the male stamen, right alongside.
There are herm's that are 50/50 pollen sacs/female buds on a plant, sometimes on the same branch. And some plants that have only a few buds, mostly pollen sacs.
Btw, don't use any seeds from a herm.