Hi, I'm new to this board,

I was attacked at work - where I still work now - got PTSD, Self harmed when the flashbacks got too much and seem to have developed a "checking" habit - I check my car doors over and over again to make sure they are locked and the doors and windows of my flat - it's a safety thing - I realise that it's because I don't feel safe anywhere now - What I'm wondering is, does anyone esle out there check things ? or used to -if so how do you stop? I have tried - I check once and as I check I say - see that's locked - it's ok - but as I walk away I get a feeling like something bad will happen if I don't check again - I know that's dumb -but at this stage I can't seem to stop.....