A lifetime movie plot, yet it's my life....

I hate when my dog starts barking at nothing. It scares me....
He's doing it right now, barking from the inside to the outside. I was afraid he'd might be out there.
I have just given birth to a son, no longer than three months ago. His son. He rushed right into my life, didn't give me a second to think - and I dove in. And I can't tell you to this day what, how, or why that happened. He got me involved with the cops on a domestic violence charge, because he was drunk and decided to take it out on my apartment. Second chance given. He moves in with me and my mom. 2 Months later I got pregnant with our son. I continued to work and support him. Because he had no job. In fact he hadn't had a job since 2004. He had no car. He had no family, he had NOTHING. But me.... He offered nothing to the table. Meanwhile, I go to work as a waitress - giving up many dreams I had once had. He tried to find jobs, I took him to interviews in my jeep, spent my gas money, spent money on lunch. Yeah we "looked" for jobs for him. Nothing was happening for over a year that I was with him. So I worked all the way up to my 38th week, I delivered 40 weeks and 3 days later. I primarily took care of Paxton, our son. I was up every three hours in the night. He claimed he couldn't hear him. Well baby Paxton has been sleeping next to our bed since he was born, and when he wants up he'll be darn sure to let you know. During the day I would watch Paxton while Mike would go out with a commission based sales job. Which was going nowhere fast, especially being on my dime. Gas is expensive! He never made money at this thing and I was at home watching Paxton, then when coming home I would have to go leave for work. All the while Mike gets to sit at home on the computer living out pipe dreams of a Clothing Company. And tending to Paxton only when he needed to. He had become this leech, and I enabled it. Well finally I had had enough last month and decided Mike needed to move out. That I couldn't take on all this on my own. Taking care of Mike, taking care of Paxton, and taking care of.... me. In this time Mike has overly harassed me by texting, blogging, and calling. Begging for his once pretty decent life back. He had nothing. No one left to turn to, but a party animal cousin. He moved in there and has been partying every night, having people over, talking about how girls are coming over there. So he's done nothing to change. Stays up all night, drinking, wollowing, etc. No job hunt, no space, no rationality.
And then he trys pulling the suicide card. I can't live without you, I'm going to kill myself, and saying the tretchorous things he's going to do to himself. Pills and beer. Well either way I called him out on it. I called the cops on him. My therapist suggested I do so. She was right. It felt good and empowering. To say no, you dont have that hold on me anymore. I'm not falling for your tricks. The cops picked him up and he was in the hospital for a mesely 4 hours. They let him go, and not a few minutes later he was calling and texting me on how much he loves me. And to share, he really hasn't made a big deal that he hasn't seen Paxton that much. I know I'd be dying if I couldnt see Paxton. But right now, I just dont think I can have Mike around. I dont want Paxton to be his excuse for coming over. So he could get to me. He's beyond made me mad, and he's drove me to my wits end. I'm trying to keep it together for Paxton and myself. I've made strong progress, and I know I"m doing the right thing. But Mike just wont back off, and frankly he scares me. He is A. Coniving. Sneaky. Ratty. He uses everyone to solve his problems for him. He asks people for money to bail him out of his police problems, or life problems... Now most people have exhausted their efforts with him because he leeches and never takes responsibility. Sometimes I feel like he might try and pull something and make trouble for me and Paxton. And for B. I don't know what he's capable of. I've seen him at his worst of times, and it's pretty scary. He goes bonkers. Sometimes in his fits of anger he'd throw something at me. Examples, a ring, a pacifier, pillow, burp rag, papers, a cigarette... He went to anger management classes, it seemed to help for awhile, but now he seems back to his old self. And drinking was the worst of him. I don't know if he'd come after me, or Paxton, or anyone. Like I said in the beginning, my dog really scares me when he starts barking at the outside................