I have a chihuahua who was in heat weeks ago.. We let her out when my husband and I were staying in the hospital from Feb. 29 through march 5th when I had my baby. We just realized she is pregnant. This is the only time it could have happened as no one was home to make sure she didn't get away. Based on this when would you say she would have her pups??the only dog small enough in my area is a chihuahua next door. we were planning on breeding her anyway just not so soon. why would i spay such an expensive dog that was gotten for breeding????