[penpen7073]

I really wanted my furbaby to have puppy's had her at the vet yesterday he said she was to small and it would not be good for her to have puppy's she is 4 pounds she was in heat in December and she is now in heat again so should i get her fixed are should i try for puppy's i dont know what to do is she to small and why is she in heat so soon again ???????