I'm glad you have decided to see a physician and possibly get on ADs. I think they will help you for a while.
I am very happy to read that you think marriage is special to you and God. Your marriage is worth fighting for, but it's going to take a lot of hard work and patience to get you through the days to come.
Sounds like you have a wonderful wife and I do hope that she comes through her crisis and realizes what a wonderful husband she has.
Good luck today.
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.