my dogs have breed and got stuck 4 times is that two much

huh? you mean the babies get stuck coming out or the animals get caught together? first of all, don't breed animals... if your desire for money is bigger than your concern that each week literal THOUSANDS of puppies and kittens and cats and dogs are put down at shelters around the world, then you have no soul. Stop breeding and start spaying and neutering. In direct response to your question, every time this happens, you increase the likelihood that delivery of future babies could potentially be fatal to your female in the form of intense tearing and hemorrhaging. if babies or males are getting caught in her canal, tissue damage is occurring.