I have a 6 day old Chihuahua/Pomerainian pup. He still has his mom but she is new to this baby thing. I have already lost one boy and the second is really constipated and I don't know how to help him. We tried the warm,wet cotton ball but nothing. His poor lil but looks swollen shut, very red and he whines all the time. His belly is hard and he is starting to stop eating. Please help..