it will get better. You are one of the stories that I always read and I really admire your strength. I was also the one that moved out and went through all the emotions that you just wrote. I felt the same way like I was the one who has to move to my parents' house with my son and I was not the one that cheated. I felt is was unfair. But now, it was THE BEST thing I ever did! IT will get better. You will be able to heal out of that environment with your husband now. You will be able to get some time to yourself because you have your family to not only support you but to look after your kids as well. That is a big help for those days that you just need to lay in your bed and not move (and nothing is wrong with having those days...just not too many of them :-)).
After all of this you will notice how doors that you didn't even ask to be opened just start opening for you. Things will start happening for you that you are just amazed about but thankful for. I will keep you in prayer but I know that you are an amazingly strong women that will be just fine :-)
Me: 28 H: 32 1st marriage 4 both 1 1/2 year married 2gether for 9 1S: 6months 1stepson: 2yo