How do I deal with being paranoid?

I'm having a hard time with accepting that I am paranoid.
I am aware that it is in my head because so many people have made it clear that it is. When I'm out in public I feel like people are glaring at me, talking rudely to me, judging me, laughing at me. The thing that bothers me is I physically see these things happening before my eyes but when I tell the person I'm with about it they say that I'm making it up in my head but I'm SEEING it. This scares me because if I'm actually seeing this and it's not really happening what else am I hallucinating (if that's even what's going on) I'm on meds for bipolar but I'm starting to think maybe I'm schizophrenic or something. I'm scared and going to talk to my doctor about it next week but how can I deal with these things happening in public in the mean time?
How do I deal with being paranoid?
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