This a normal bodily reaction Bdays. As the time goes on these will get less. Also in a way it is good to have these, it is kind of theraputic, bringing the horrible things to the surface rather than kept inside. When they are at the surface you can think about it and find ways to manage it. Like Serenity said yesterday about the chicken dinner, try to relax and think of something or do something that you like and makes you feel good. Alternativly, I like to feel and recognize the flashbacks as I find it reduces their power. I always read this verse when I am having to cope with something bad and I cant escape, it seems to help me.
“You know quite well, deep within you, that there is only a single magic, a single power, a single salvation…and that is called loving. Well, then, love your suffering. Do not resist it, do not flee from it. It is your aversion that hurts, nothing else”
Hermann Hesse