You're in the right place to discuss this. Every single person here knows what you're going through. I've been through it myself a million times. For the first four or five days I couldn't concentrate on anything of consequence like the news and I was constantly getting flashbacks to things that, quite possibly, didn't even happen. I was dry wretching, sweating and couldn't eat. I'm on day 17 now and feeling a lot better and don't want to go through days 1-6 ever again.
Stick with it and stay close to this place - it's made the last fortnight much easier for me knowing that there's people who understand available to talk.