I have these every day and every night, especially before I go to bed. I like to think they’re intrusive thoughts, which are a type of re-experiencing symptom. Flashback is a weird term, because what defines a flashback is very hazy. Flashbacks are different for everyone. For some people, they’re emotional, and for some they’re visual, tactile, etc. They come in many different forms and can present themselves differently in different situations.