I have a Blue/White Female Boston terrier and have been trying to get her pregnant for the last 2 years she has had 2 litters 2 years ago took her to the vet and all is good with her she will let the male mount her but not penetrate and tie she is 4 years old any ideas or a vet that specializes in Boston Terriers in the Los Angeles Ca area I have never had any of these problems with my other Female Boston's...