Brother, I missed the first post, you'd already deleted by the time I got around to checking the forums. But one thing I can tell you, PTSD sucks. I'm not exactly sure why you have it or what caused it but generally speaking it only occurs when something really shitty happens. For most military/police/ems guys we assume combat/human trauma related things so that's where my head jumps.
Assuming that's the case, it's best and easiest to break it down barney style in your own head or even to your significant other, family, friends, doctors etc. Hell, go on Reddit and post anonymously on http://www.reddit.com/r/ptsd, the support you'll find is very helpful. Once you're able to verbalize what happened and see every angle, you can pretty much always rationalize what you did was the right thing. When it comes to things you have no control over...those are probably the hardest to overcome.
No matter what anyone may say, every person is extremely different. Stubbing my toe could cause me to have PTSD and you'd be like Wtf?! But then you'd lose an eyelash and have PTSD and I'd say Wtf?! Obviously an extreme example, but everyone handles everything differently so don't worry about your "progression." If you take nothing else from this, take this and keep it close to heart: Take every single piece of advice with a grain of salt. What works for A, B, C or D may do utterly nothing for you.
For me personally it was a lot of time, friends and alcohol. And eventually just time and friends. I was a straight up full blown high functioning alcoholic for quite a while. Thankfully I had the willpower and, more importantly, the help to stop the destructive drinking after "only" about 2 yrs. About 10 years later and I'm pretty much alright. I'm by no means a saint and I still drink regularly but I'm not downing a bottle of scotch every day. Surround yourself with your closest friends, have a cigar and relax to good music. Talk if you want to, be quiet if you don't want to, but just get out there and surround yourself with people that love you.
You will weather the storm brother, it may take a week, it may take a year or ten years. But you will batten down the hatches and you will see the other side. Depending on what you had happen; you may have nightmares for a while, or just have trouble sleeping. You may hear a song, smell a smell, see a color, all kinds of insanely totally random shit you'd never even think of that brings it all back like a freight train. When that happens, just breathe and understand that it'll pass and you're not alone, never alone. As the old old saying goes; "This too shall pass."
Take care buddy, I'm sure I'm not alone in saying that we're here for you if you need us.