I am one that it happened to. I am been thru hell, (as have most of the people on this board) but I truly believe that there is a reason for what happens to us. That said, it still sucks MAJOR big time.
I agree with Puppy. The AD's saved my life, and my doc was a godsend. I also had anxiety attacks (and hives, weight loss, memory loss, insomina just to name a few)and I truly could not breathe. I think I cried every day for 6 months. But I survived, and my marriage is better now than before. It's still work, but work that we are both now willing to do.
Please remember that no matter what happens between you and your H, this is not your son's fault. I'm sure he loves his mom and his dad. This is going to be very hard for him also. You need to be the rock for the both of you.
Most of us are about as happy as we make up our minds to be.