It sounds like maybe you're being triggered.
Sometimes we know right away that we've been triggered and other times we just get that strange feeling that overcomes us and we go searching for something to explain the odd feeling.
With knowing that you've been a victim of so many things, including being terribly bullied, it makes me want to just give you a big hug!
Since I can't do it in person...I hope this helps!
Hang in there.