Over protective or crazy?

My son isn't born yet, I'm only 21 weeks, but I've become what I call the devil mom. I can not stand the thought of sharing my child with anyone other than my husband. I want to keep him in my stomach forever. It's awful. But I'm sure it's normal. I'm so ready for him to be here I'm being so impatient. 
Also, I'm having issues with my MIL and the baby. Let me start off by saying I am a very clean person. My house is always spotless, I have a touch of ocd. She is not. Their house is disgusting. I'm not kidding, they have 3 dogs and 2 cats that pee on the floor and they leave it. They don't clean. They don't do dishes. The house smell SO bad. It's awful. I have talked with my husband and told him I didn't feel comfortable with our baby being over there at all. Is it wrong of me to ask they come to my house if they wish to visit with the baby? Can you imagine how sick my child can get? Not to mention the fact that the dogs jump on any and everything. They (in laws) are already mad at me because I have informed them that I will not allow the baby to stay the night with anyone or go to anyone's house without me being with the baby. And I've been called "disrespectful" for not allowing anyone in the delivery room. 
Sorry for the long post.