You've got to take care of yourself first and foremost. The panic attacks and depression are not only dragging yourself down, but your son as well.
Get professional help for the times you need it the most.
If you feel that you are going to lose out financially, then file to protect yourself.
When you say things like your H is "very sneaky" you're letting your emotions overshadow your judgment. Your posts are still all about your H. What about you? What about your life? What positives do you see about YOU. Not your M, but YOU.
M-43 W-40 2D - 9 and 5
Emotion, yet peace. Ignorance, yet knowledge. Passion, yet serenity. Chaos, yet harmony. Death, yet a new life.