 (I have clinically diagnosed Autism and ADHD , and I kind of suspect either BPD or CPTSD as well) 

I was talking to psychiatrist and was talking about how I physically felt unwell lately (my grandparents were in the room) and my grandpa interjected saying that i had already gotten checked out many times by doctors and I was probably fine, and I immediately started crying and I kind of started saying “no, that’s not really how it went! I still feel bad! why are you telling her this! I’m an adult I can speak for myself!” I got really angry and upset as well. 
I apologized after, saying that I was sorry for making a scene and that papa was technically right, I was just upset. 
Is this behavior of an autism meltdown or ADHD, or could it be interpreted as a BPD or CPTSD symptom? 

(Note; I have some other behaviors that are weird to me and I can’t figure out.This is just one example of one type of behavior.)