Wish I could help you. My girl, Georgia, has the same problem. She whelped on 01/15. I've had her to the vet 4x. Her fecal is always neg. bloodwork is fine,just keeps having bouts of diarrhea. I mix plain yogurt( 1/2-1t.) in her food & that seems to help. Also vet gave her Albon just in case. I feel so sorry for her. She is skin & bones. This is her 1st litter. Her baby boy will be 6 weeks tomorrow. I'm trying to wean him,but he's so tiny. 14 oz. I won't breed Georgia again. I'll have her spayed & find loving forever home for her. Sorry to run on. I hope your little girl gets better real soon.