I feel I have PTSD, but not from a time related to the time I was serving.
If your stressor occurred outside of your service time, you do not meet all of the requirements to receive benefits from the VA.
I cannot function as well as I used to as a result of a major stressor due to a very negative life event.  Can I get benefits from the VA?
You must meet each and every one of the requirements to qualify for payments.