YAY for nice old Ob!!!!

Yes it would be a good thing to debrief, and soon. You can feel how shaky you were (or still are) right through your post.
Have you thought about which way you would approach it? The birth debrief threads are good, but sitting in front of a screen typing it all out might be a bit too much right now.
Does the hospital have a counsellor available? Mine did and it was free for Maternity patients. It might be worth asking, I'm sure some of the others in here may have some good suggestions.

Squishy hugs for you xoxo