Please accept my condolences, too.
There is no way to paint your experience as anything but tragic, awful, terrible. It is most likely the worst thing you will ever go through.
But, you will get through this.
Many here have suggested pastoral counseling and that is certainly an important option. If you have a minister, seek his guidance and prayerful support.
If you are not "religious," seek out a licensed psychological therapist. At the least, you would want to find one with a Master's degree. A full PhD would probably be better. Check your local phone book and don't be afraid to interview several. Your need is to find someone with whom you can open up. Trying to force a therapeutic relationship with someone you don't "click" with will simply add to the stress you are feeling right now. I would, however, recommend that you stay with the "psychologists" and away from the "psychiatrists." Psychiatrists are often more reliant on drug therapies rather than interpersonal therapies. Reliance on drugs can be as problematic as reliance on booze and should, IMHO, be avoided.
Without putting too fine a point on it, and recognizing that I am not trying to make a diagnosis from a distance, you are currently experiencing a form of PTSD.
If you are a military veteran, check with your local VA. The VA has been forced to explore many new avenues in the treatment of PTSD and they may be able to assign you to a therapist with tremendous resources to help you get through this. If you are not ex-military, I am certain you will find similarly experienced therapists in the civilian world.
Finally, explore any and every avenue that has been suggested here. And, to quote a little scripture, this too shall pass.
Crusader Rabbit