Ermm... help

So I don’t know if anyone read my last post... but I’ve been living with my boyfriend and his parents for about 6 months and I’m now 20 weeks pregnant. Today I moved out. His mother was constantly arguing with me and smoking and never buying fresh meals or anything like that and his house was always smelling like cigarettes and I wasn’t eating healthy food. Let me just say we’re 16 and 17 years old. I’ve moved back in with my parents TODAY. He isn’t messaging me because he’s trying to figure out how to cope with me leaving and I’m scared we won’t be together but he is my world and the only guy I ever wanted. We are infatuated with each other and love each other more than anything but now I’m so so scared I’m going to lose him, has anybody got any help or advice because I can’t lose my best friend xx