Has anyone heard of it?

Brief Psychotic Disorder

Anyways I was diagnosed as having this at an inpatient program where i stayed for two weeks. I was also diagnosed as having anxiety, depression, paranoia and that i could be bi-polar too.

Here's the story. I was under so much stress I'm not going to say why because that gets too personal. Anyways I hadn't slept in about 5 days. I wrote this diary that was anxiety off the charts. And showed it both to my mom and my sister. -_- It is really embaressing what i wrote in there. Anyways I remember clearly it was my sister's birthday and i thought all these cameras were watching me. I also called my family drunk. I was kicked off the volleyball team thank God before i started acting too weird by my parents because i lost their trust with the personal thing i didnt want to talk about.
Anyways about a year before this i was feeling very suicidal was self-harming and had a serious case of depression. At the time i also felt like my mom was emotionally abusive. I thought my family didn't care about me. I also didn't know who i was. I was adopted and upon finding out my father was an abusive alcoholic was afraid i was like him and i had all these images in my head of what he was like especially while i was in the hospital. I also thought i was raped. Among many other things. It was hell seriously. I regret what i had said and done especielly to my family even though there was a point i had no control over myself.
I'm doing fine now and on medication. I dont want the symptoms to come back again because they might. I'm being put under similar stress that occured during this period when it happened. How do i stop myself from repeating what happened?

P.S What do i tell my volleyball team lol? I just dropped out with nobody knowing why it was very awkward. But who knows i might never see them again.