Dad went psychotic/now PTSD-ing from my own psychotic episode

I'm wondering if anyone else has experience with this situation - My dad had a head injury and became bipolar. He recently had his mania turn into psychosis and I was there the whole day as he was being admitted (against his will). I've never seen him like that and at the time I was so worried about him that my own mental illness worries faded into the background. He went into the same hospital that I was in and I walked past my old room in there. It's a great hospital, but my whole psychotic/manic thing really scared the crap out of me. It was also terrifying to be torn from my home, family and cat and then realizing that the doors were locked and there was no way I could get out without being discharged by my doc. I try to put all that towards the back of my brain, but this whole thing with dad has seriously messed me up in a sort of PTSD way. I couldn't bring myself to visit him and now that he's home it's no better. He understands all this so his feelings aren't hurt, thank god.

I don't know what this is about and I have no idea how to deal with it. It's not like I think I'm going to relapse or anything like that. It's just that those 2 weeks of crazy before the hospital was the most terrifying thing I've lived through and I've never really recovered from the trauma of it. Dealing with my dad sort of just threw all those memories right in my face. I don't know how to deal with this. Anyone else have these sort of problems?

I get that all the time when I go to my home town. It takes me about a month and a half to recover. My therapist stress when I go because me being okay takes a bit when I get back. All the fear of each psychosis and memories of them come back. I walk by the places I hid food or hid because I thought people were following me. Walk by/into the places that I thought others were watching me.