When remembering a stressful experience it’s important not to get stuck in your thoughts.
Most people would be a bit shocked after what you’ve been through. Our brains tend to try to go over things a few times to get a grasp at what happened. Sometimes our thoughts become a movie of the stressful incident that plays on repeat in our thoughts. Try to think further. Remember how you got out of the situation, remember how you got home, remember how you had dinner, remember how you got to bed. And remember: You’re okay, you’re alright, this is all behind you, you did alright, and right now you’re safe and fine.
Try to explicitly think this a few times. At the very least, this is a much more pleasant thought to get stuck on than “fuck, I’m in danger”.
And if it helps: Either distract yourself or tell someone what happened. Both are okay. Just don’t stop at the scary part when telling the tale, always think and tell about it to the point where you were safe again.