Oh, Frazzled, welcome to SR. I am sorry for the reasons that brought you here. You will find so much experience and strength and help from the members.
We all, to a certain extent harbor resentment toward the A's in our lives. We, the codies, tend to take on all the problems of the world and wear ourselves out trying to fix things that we have no business trying to fix.
Please understand that you are not responsible for your husband's decisions. You need to try to take a bit of time for yourself right now as you move forward. Allow yourself to get some extra rest, fix a nice, simple meal for you and your son, pop some popcorn tomorrow night and rent a goofy movie.....
One step at a time, one day at a time. It does get better! Hugs and prayers to you!
HG
p.s. There is a lot of GREAT information on the Friends of Family of Alcoholics forum. Read through the threads at the top of the forum page for some general information and then introduce yourself. You will be greeted warmly and surrounded by kindness and support!