Nancy,
I'm glad you feel comfortable in this place to vent. I don't blame you for feeling uncomfortable in letting it all hang out in your blog, but at least you can scream "THIS SUCKS" here. A healthy thing for sure.
My son had some serious medical issues a few years back and I can well remember a few times when I thought the hard days would never end. But one phrase that helped me get through was, "This too shall pass." When you are in the thick of crappiness it is easy to get in the mindset of thinking it'll last forever, but it won't. A turning point will come in the near future and then you'll say to yourself - I can do this, it'll be okay. May that point come soon for you, until then remember, this too shall pass.
hugs, Erik