Don't drink. Cry. It sounds stupid, bit crying out all the pain might help. Do not run from it. Go through it and cry again if you need to. If you can do so safely, drive and scream in the car. Or break some stuff that you do not need anymore (like plates or something).
I have been through some traumatising stuff and the only thing that helps is not to run, but to go through it. I promise you, there will be a peak in pain and then it will reduce and the next peak will be less severe. This will go on and the pain will become less and less. As long as you keep breathing, you can handle it.