Same thing happened to my shih tzu's cute pup. It was her first time to gave birth, and I was all alone to help her. Her first pup was so healthy, while the second pup was stuck up in her opening as she's trying to deliver it, the puppy almost drowned and about to die but we were able to revive her, but the third pup immediately died. The 3rd pups stomach was bleeding and her intestines were all out.. It's really hurting me inside as a furparent. Run free baby..