Hi CQ, fellow Brit
Welcome. I get fear of attackers being in my flat at night too... comes in phases, but it renders me insomniac sometimes. Sounds awful what you went through. Sounds like your PTSD comes out as obsessional... understandable considering. I know what you mean about the news... I can't watch it. Maybe doing that could help you for a start, until you have worked through your trauma?
I hope that you find it helpful here...
See you around,
Lisa.