Jeannine,
I'm very sorry for not being very neighborly and dropping by your thread sooner. I did glance over the latter half of it and it did make me smile to see your goals listed today. Its good step towards regrouping to overcome this struggle then let it overwelm you. To that end, I really do believe you need to focus all your energies right now on your health and not think about M right now so your not fight a battle on two fronts at the same time ... as hard as it is. Allow your H to have space ... even when he is with you ... loving detach. Preoccupy your mind with ways to focus on ways lower your stress.
What I've re-discovered recently to lower stress, is to not think so much about what has happen or what's about to happen, but live in the moment. Look for what's good about today and engulf yourself in it ... marvel in it ... concentrate on it in order to tune the other stuff out.