A new therapist perhaps?

Tomorrow morning I see a new therapist with my gf as a joint session. Don't worry folks, it isn't relationship counselling as our relationship is great. Just my gf suggested I go along so we can better understand each other's issues and therefore provide the best supportive environment we can.

I'm nervous, like really nervous. I know I'll be encouraged to speak, but it takes me AGES to open up to someone like that and usually then, I dont fully open up until I know them really really well. What if she treats me like a freak like my last therapist did? I'd tell my last therapist about my symptoms of schizophrenia and they'd always call the hospital and ask for admission as they thought I was either psychotic or suicidal. All because every single day I hear voices telling me to harm myself. I haven't actually harmed myself in some time (by 'harm' I mean an attempt on my life). I was always taken involuntarily by police because I didn't think I needed hospitalisation. This caused a lot of trauma and upheaval in my life as you can imagine.

Should I give this therapist the benefit of the doubt and go, or should I cancel?