M.O.
Just a thought...my daughter was on a antibiotic that (because of the iron in her formula) made her stools red. It looked bloody. But I don't remember jelly like substance being there. My son got salmonella when he was younger. That caused the jellyu like substance. Hope these give you ideas to take with you to the dr. I hope she is ok. Good luck!
30 yr old SAHM of two boys 11 & 8 and a 11 mo old little girl