If you have a gut feeling that something is wrong, then you need to go with it. Use a free session. See the therapist, just tell them the events that have happened, and how they have affected you. They should be able to take it from there and ask you questions to make a determination.
It's like if youre sick and you go to the doctor; it's not like the doctor expects you to know what you're sick with when you walk in the door - it's their job to diagnose you.
I hope you find the help you need