We don't mean to belittle your experience in any way. You sound like you are having a really difficult time of it and that sucks.
We cannot diagnose anyone. However, nothing you have described sounds like a Criterion A event. The reason criteria A events have to be sudden, unexpected and severe like threatening/violent is because the event has to be severe enough that the brain becomes arrested and doesn't process it correctly. This is why wehave flashbacks where we feel like we are still in that exact moment with no knowledge of the present day. Additionally having a Criterion A event isn't enough for a diagnosis of PTSD you also have to meet criteria B-H.
What you describe originally sounds reasonable. If you had a bad experience of something you will be wary of it in the future, once bitten twice shy. This is understandable. I wouldn't worry so much about getting a diagnosis of PTSD. While feelings are not facts, they are still very important and should be listened to and acknowledged (though not always acted on). Even if you don't have PTSD that doesn't mean what you are going through isn't a valid issue. It is.
I highly recommend sitting down with pen and paper and listing out your current symptoms. Take that into your counselor and discuss with them what methods you can use to manage them, ask about coping mechanisms to help in the moment when you feel really anxious, be sure to practice them as well as it helps them to work. Once you learn to manage them in the moment, you can then work with your counselor on decreasing them. Don't worry about what you do or don't have, just concentrate on improving things and moving forward.