Lindz,
I think the best thing to do would be to talk to a pediatrician. A good drug info site is
www.rxlist.com but I would call your baby doc and see what he/she says. My guess, just to warn you, is they're going to say to stop feeding. I looked up Depakote and it said it is secreted in breast milk and I'm no doc, but I doubt your pediatrician is going to say that's okay.
Good luck,
serafena