Hi! It sounds as though all is well. I think your mama cat is experiencing afterpains & loose bowels from labor, delivery & eating the membranes, but if it continues or she appears distressed, take her asap to the vet in case of infection. So glad the kittens are doing well. Hopefully, @stefanz will respond soon about the points & the panting & loose bowels. I hope mama kitty feels better soon. Please let us know. Congratulations and good luck!