Is this PTSD? Having some issues and wondering if this is why.?

it almost sounds like the trauma comes from the whole thing that happened not just the stalker. therapy, despite what you may think, can help. there is no magic cure for this you just have to talk to a therapist and work through it or at least talk to your family or someone you trust. there are meds that could help but this is really something that you have to come to terms with within yourself.