I emptied one, even though it is a VERY dangerous thing to do. I just hope she didn't aspirate anything. But, no to any "cillin" based antibiotics! This is a yeast infection and the last thing you want to do is wipe out the beneficial bacteria in their gut. Yeast is a fungal problem, not bacteria.
I am trying a treatment I found on backyard chickens that gives pieces of a monistat insert. People have had good results as this is a specifically yeast targeting fungus treatment. I'll post results. I hope I didn't wait too long, though.