Well, the mention of the changes being offered to the DSM V, which include the terms of complex ptsd, btw (not an established dx though popular by therapists trying to jump the gun)... just adds fear into those who truly have those diagnoses. The small group of professionals are trying to water them down,imo
PTSD isn't understood by many professionals. None of us know completely what it is ALL about... but the basics stem from having been exposed to an event that caused you to almost die or think you would die etc., and having the anxiety reaction that pervades your life.
Your T may be correct in thinking that you might not have PTSD, if the event(s) don't include all the requirements for the dx. But, surely, there is a label for whatever it is that has affected you, and thus there is treatment as well.