My dear Maria, my heart breaks for you. Please try not to torture yourself too much by all the reading etc. It only hurts you more. I know, been there done that etc..
All I can think of is how you gave up so much to try to save your marriage.
I guess she works with your H to have been on all those trips.
Please get something to help you sleep you need your strength.
One tiny step at a time.
Lighting my candle for you and your little ones,nightly.
May the prayers and thoughts of your many friends around the world give you some comfort and strength.
(((())))