Yes, this was a positive for me after having my daughter. When my milk first came in, I practically looked like a porn star. It normalized, then of course, my daughter started preferring to nurse from one side, so I had one breast a full cup size bigger than the other, even after trying all the tricks to feed her from the other side.

I think I actually got B cups while nursing; then they went down to AA and stayed there. Pretty demoralizing.

Other things besides psych meds can cause high prolactin levels too. I can't remember them all, but tons of people had high prolactin issues on the fertility forum I belonged to while trying to conceive and then while pregnant. There were all kinds of issues, but I don't remember them any more.

And if it's non-psych medication related, it is a good idea to get your gynecologist to check out all the possibilities. Likely, it is from the psych meds, but just in case it's not, cover all the bases.