blueangel, hi and welcome...
Sleep deprivation will almost always do me in...I cannot think straight, it becomes a revolving door of worrying that I won't sleep, and I feel out of touch with everything.
Have you a pdoc that might help you with a med that would temporarily help; helping you sleep while you are getting through some of these rough spots?

Nights of hell are very familiar to most of us...and there are a variety of ways we handle it.
My hope is that others will share what has helped them.
For myself, music is one of my healers. My memories are there, I may still be weeping, but I'm also doing something that takes away some of their power. Hearing the beauty of my music soothes me...

Please keep posting as you feel comfortable, and let us know how you are doing...we care.
I care

In Peace