Hi, I'm new at this and also English is not my native language so sorry if I do a gramatical mistake.

I have been diagnosed with anxiety and hypochondria (the hypocondria is only with mental illnes conditions like schizo) and basically I was on my way to beat it, but 3 weeks ago I had to travel to other country cause holidays. Basically I noticed that only when is bed time and there is absolutely no noise around the house and I'm not with the phone, or TV or something, only me and my bed, at some seconds of trying to sleep, my brain started to pop up random words, sentences... The problem is that is not my inner voice, my inner mind pop up words or sentences I listened from for example my cousin, or my uncle only family members  during the day.
 1 year  ago it happened to me that I was having songs stuck on loop on my head the hole day (I'm just saying Just in case is relevant or something) 

I decided to Google it and it say it was a symptom of schizophrenia wich made me shit off my pants , but also there were ppl saying is not 
 It started when I traveled other country cause holidays (in still in this country) .
The reason why im here is cause yesterday at night I decided to sleep with my sister in my grandma's house, I told here I wasn't comfortable there but still wanted to make her company so I was so anxious at night and scared of why if this happen again, 
It finally happened and  I couldn't sleep cause I was not comfortable wich made me have like 3 panic attacks that night. When I stopped giving to it attention it seems like it dissapear but then I remind it and I got scared and it got back. 

Only happened  2 times, 3rd day beeing in the other country and the second time yesterday, 3 weeks later, in both days I was so anxious and stressed. Only happened at night in the moment Im on the bed the rest of the day is absolutely normal
PD : no one on my family have any mental illnes ,, im 19 and I also have dpdr.
Sorry for long txt im so scared and hypochondria is not helping lol.