Last, I am so sorry for what you are going through just now. It is excruciatingly painful to discover that. It may feel like there are no plusses to this situation, but actually 'busting' a PA and bringing it into the light of day is an important step in the process.
As we know, A's survive and thrive on secrecy, fantasy, passion, excitement. Bringing them into the light of day and under scrutiny changes the dynamic and undermines their 'power.'
This is such a volatile time for you, and it is important to take care of yourself as best you can and hold true to your own values. I agree with others on MC. Until or unless your W agrees to important conditions and is 'all in' for trying to rebuild, MC is likely a waste of time.
That said, I don't think your chances reduced from 20% to 2%. Busting a PA actually moves things on a step. I think much of your future hope and chances for possible R depend on you. How patient you can be, whether you are able to forgive and work through the betrayal and so on.
For now I would say look after yourself, hold true to your values and keep posting.
Take care my friend ((((Last))))
T 13 M 7 Me 48 H 46 SS 15 BD 7.14 PA D final 5.16 (H filed)
We receive & we lose, and must try to achieve gratitude & embrace with whole hearts whatever of life that remains after the losses - Dubus