Sometimes, not feeling anything is the only way you can cope.
pervocracy
Be prepared for a delayed reaction, too. It’s very common to be totally calm during a crisis, and then days or weeks (or years) later suddenly get hit with a tidal wave of “HOLY SHIT THAT HAPPENED.”
Sometimes your mind waits until it feels safe to start processing things emotionally. It’s a powerful survival strategy, but it can really blindside you, because just as you start to feel like things are okay, you’re overwhelmed by the realization of how not-okay things were before.
This may not happen, and that’s okay too. But it’s something to watch out for when your initial reaction is numbness.
Not remembering the event is also not unusual. Your brain basically says “this event was too traumatic for you and would cause intense physical side affects if you were to be able to think back on it, so were gonna lock that away to keep you safe from it.” Some people remember eventually and others may not. Both are okay and you’ll get through it.