Sexiixtc ….. it could be *round worms* check this website ………
Intestinal Worms in Dogs and Cats at ThePetCenter.com
Also, if at all possible, try to get a stool sample to take into the Vet in the morning. Watch for your baby to poop and then put your hand in a sandwich baggy, pick up the poop and turn the bag over onto it - then put it into another ziploc. DON'T refrigerate - just set aside and take in to the Vet.
HTHs ………