My daughters father I need advice.

I just don't know what to do, I'm 3 weeks away from my due date and I've been single threw most my pregnancy ever since her father left me in February. I've never managed to get over him. He's 18 and now with a 16 year old. And I'm about to have his baby. He doesn't talk to me or even claim her as his. I'm scared he's going to show up at the hospital. And I just don't know how to react. It just starting to hit me. I've been strong but it all till now. I have so many emotions. I don't want his gf around my child, is that wrong? And also his cousin has done nothing but harass me ever since she found out I was pregnant and he left me, I've had to call the cops on her bcuz it got so bad, and I don't want my child around her either. I just don't know how to feel about all this or anything. I'm still in love with him, and he hates me. The only person who is close to hike that cares about this baby is his mom. I just don't know how to react or what to say if he come to the hospital, or if me not wanting my child around some of the people involved in his life makes me a horrible mother... I don't have any trust for him either. But am being nice enough that he can stay at my house to spend time with his daughter if he choses. I guess I'm just asking for some advice