I feel my friends are against me and I keep hearing things

I don't know if this would be considered schizophrenia, but I couldn't find a better place to post this. So, I've been feeling that my friends are against me. I've thought it through and it really doesn't make sense. Anytime I spend time with them I feel like I'm being had. Which they wouldn't have anything to gain from that. I'm also worried about my girlfriend cheating on me, getting kidnapped, raped, or killed. I have these sessions of images going through my mind and I feel distracted during this. Sometimes I even quit breathing. I don't know what to trust anymore. I even lost a friend, because I 'couldn't trust' her. Which is true. I told her about my paranoia and she says if you feel that I'm manipulating you it's cause I am. I said her jokes weren't helpful and were just spiraling me down. She told me she wasn't joking and I lost it. I also keep hearing random things that aren't real. I heard my name yelled but the person I heard wasn't even in town. Also I heard beeping that wasn't real, but I was trying to sleep so it could have come from that...