It is normal to feel jealous. All of your feelings are valid. I want you to keep in mind that you are seeing your therapist at his very best. You dont see his ugly side because it isn't ethical for him to be focusing on himself up in session. You may think he might be a great father and the baby is lucky but like I said you don't know what he is really like. There are plenty of people who had therapists for parents and are pretty screwed up. Talk to some people on this site who are married to therapists. They will tell you that therapists can be just as screwed up or even worse than we are. You are the lucky one because you get 100% of his attention in session.