Hi, I need some help..

I was diagnosed as having schizotypal personality disorder but tonight I had an argument with my girlfriend and I began to act funny and I still am. I smashed my phone with my fist and my family got nervous and intervened and then I started acting like a child. And someone said something and I shook like I was having a seizure but I knew in the back of my mind what was going on. I wonder what is going on with me, I get these major tantrums and just repeat things over and over again. I'm scared, now my mind is stuck in a funny place and I'm so paranoid and afraid. Please try to help me figure this out. And the next day I'm still talking like a child and I can't find information anywhere and I feel so afraid. I don't want to lose my girlfriend but i don't think she understands, she thinks I'm using my illness as an excuse and I don't know what to do because she's my only link to the real world. And if things end I would end up in a hospital I know it.

Could you see the same doctor who diagnosed you?