R.G.
I got extremely overwhelmed just reading your post! I think that you will find the answers as to why you are so stressed just by reading through your post yourself. Women these days are expected to do so much more than our mothers and grandmothers. Most often, women stayed in the home and took care of the household and children. Seldom did they work out of the house on top of everything else. Unfortunately, because of our economy both the mom and dad HAVE to work..it isn't an option. If you can't scale back then you must find a balance and your personal boundaries!!! You are about 5 months pregnant..and that alone is enough to keep you exhausted. On top of that you have another child who I am sure keeps you tired even if it is only a few hours a day that you see her..then the housework and your job...It sounds to me as if something has to give and soon or it will be you that blows!
As wondeful as I am sure your hubby is, especially taking on 3 jobs and 'stepping up to the plate' he has the luxury of dealing only with outside distractions. Men are different creatures than us and always will be. They will NEVER fully understand us and what it is like to be pregnant and tired. If he's done with listening to you about that then perhaps have your OB-GYN step in and explain a few things to him. Men seem to respond better to the professionals rather than us! Take him to your next appointment.
You need to tell yourself that you are going through what so many other women face..you are not the minority. It is OK to say and feel that you cna't do it all and that you are blue and stressed. Find yourself an online women's group that are in the same boat as you. It will help for you to vent to those that truly understand and you are likely to find some stress relievers from others. It will help you tremendously to know that there are others like you and learn some small tidbits from them on things they do to cope. You also have to realize that your body is completely out of whack right now..your hormones..your vitamins..maybe some deficient areas...all normal.
One thing I did learn from a counselor once was to view the issues at hand as just one slice of a whole pie. Your life is the pie and your immediate problems are just one small slice of it...compartmentalize these feelings a bit more..and above all else keep telling yourself that it is OK to feel the way you do.It is OK to not be able to do it all. And it is OK to fail at times for this is how we learn to succeed! My very best of luck to you and yours..but I really don't think you need it as your life seems as normal as everyone else's!