Take it easy fella, I know how your feeling
I've been there mate, exactly the same situation a long while ago.
It will hurt for a while, weeks, months .......who knows ? Just dont be spending time on your own too much right now, your head is gonna be your worst enemy
Spend time with your mates or family and try to relax, your doing the right thing now by discussing it with people
Yes the worst has just happened, but things WILL get better !!!
All the best now, and stay positive.