Unknown for me what triggered it. 2 months prior my dad passed away but don’t know whether this had to do something with it.

The setting was me sitting at home on the couch with my dog. No phones, no tv nothing. Just me and my dog on the couch. I kinda passed out. But I don’t know for how long. Was it 5min? 10min? 30min? Or only a matter of seconds? Unknown