Do I have paranoia? .?

I've been in a mental hospital three times. Diagnosed with bi-polar disorder, anxiety, OCD, and some kind of personality disorder like bpd or something. Anyways. Sometimes I think people are setting me up when they ask to hang out.... And those people are my bestest friends. When I'm driving I think my tire is going to fall off. When I bum a cig from a friend I start thinking they put poison or some kind of drug in it and I feel like I'm going to die. I have major panic attacks. I'm on zoloft, and trileptal. What medication can help this cuz it's only getting worse!