My doy puped Diarrhea And Pink Mocus..
These symptoms are very likely an infection. To give you a proper diagnosis and treatment, you should take your dog to a veterinary professional who will determine if it is viral or bacterial infection.
If that’s the case, your dog will urgently need an antibiotics treatment.
Until you take him to a vet, which should be as soon as possible, you can clean his nose with saline and a clean gauze, in order to clean all the mucus so he can breathe freely.
With severe diarrhea, puppies dehydrate very quickly and have less body reserves to resist. Don't wait any longer, go take him to a vet.
All the best.