I could cry when I read your post. Earlier this week I went without any food for close to 72 hours, not by choice, I simply cannot eat. The same goes for sleeping, I wake up intermittently and have a total of maybe 2 to 2 1/2 hours of sleep max on a daily basis. It's exhausting. Periods like this have been coming and going for months now... and they are getting worse. I'm numb, and it's next to impossible for me to "function" anymore - not that I think I ever "functioned" properly as a human being, anyway but you get the idea....
It's tough. I feel your pain, and I hope you find relief and/or help of some sort. Wish you the best.