Hi Jennifer,
I just wanted to add a few words in support...
You are doing a fantastic job, this is one of the hardest jobs in the world and by taking it a day at a time you are giving yourself the best chance of seeing this through. I had major bf problems and got to the point of wanting to give up. I spoke to an anonymous bf councillor who really helped and the fact that I didn't know her helped tremendously. When I hit rock bottom with the bf I gave myself 2 weeks and if I didn't see an improvement in that time I would change to formula. In the end a week was all it took to see an improvement with support from my dh and bf councillor.
I am glad we did see it through because dd developed eczema which is in part caused by an intolerance to dairy. I am also vegetarian so it has caused us some problems with finding stuff to eat. Although you are off sugar there are loads of other foods that can give you energy, dairy products are one (although, I would watch this one if your lo seems to be intolerant to things) but also carbohydrates, such as brown bread, wholmeal pasta, basmati rice, bananas, oats, etc are all fantastic sources of energy. But they are full of the kind of energy that will sustain you for longer periods of time rather than the simple sugar you find in chocolate, sweets and other processed food. A really good place to start is all the books out there on the GI diet as this is designed to help people stabilise their blood sugar levels over the course of a day. Although the last thing you need is a diet, the recipies will help you figure out what you can eat, just eat loads of it.
I really wish you the best and I am sure that you can get through this. Do take care of yourself.
Best wishes
Claire