A-w-w-w Sue, I am so sorry to hear about all of this.
My gosh, yes all of this I am sure is causing this flare. Lots of stress does me in and you have tons going on right now. Your "grieving" - which is one of the hardest things to have to go through. You have lost your brother- give yourself permission to feel sad and out of sorts! And to take extra rest periods (naps), your body needs to right now.
I relate to studying for state exams for nursing- it is VERY stressful, but your son will pass or he won't- If he doesn't pass there is a waiting period and he can take them again. If this is something he really wants he will get it!
DIL, She sounds like she is a piece of work and mean. Now that there is a baby involved it complicates the heck out of things. I would be concerned too because that is your grandbaby. One day at a time, one day at a time would be my mantra right now if I were you- this is not going to be easy.
Your good friend is probably as low as she can go- so with more "time" she will have no place to go but up. I know you want to be there for her, but remember you are going through alot of your own stuff.
Let us know how your doing-
Fibromyalgia, Depression, Anxiety, TMJ, Arthritis/neck, SAD
Zoloft, Tylenol 4000 mg., Darvocet