So so sorry you are in this place.
I hope your son will get in rehab and in the meantime leave you alone,
I get that kind of anxiety, the F.M.L., and some of the addiction stuff (my alcoholic father got sober when I was 19).
You bring so much care and love to us here, and such helpful words. I wish I could give you equally reassuring words.

But I can offer much
I hope everything starts settling down some soon.
By the way, I love your signature.