You know that people diagnosed with bipolar disorder suffer delusions and hallucinations , right?
And as for the Schizophrenia and paranormal connection, here it goes :
If a schizophrenic believes in the paranormal, he is likely to 'witness' paranormal events.
If a schizophrenic believes in UFO abductions, he is likely to be 'abducted'.
If a schizophrenic believes in evil teaspoons who want to control the world, he is likely to be seen fighting teaspoons, throwing them away, or running away from them ( You get my point. )
Schizophrenia isn't the only disease reported in those who swear to have had paranormal encounters.
All in all , I'm glad that you've seen a psychiatrist for years and I hope you still do ( if you don't you should , considering your disorders and your traumatic past) and if I were you , I would really pick up some psychology books and read them. ( Considering you love looking into paranormal stuff , it would be a great aid so you don't take anything for granted )