K.H., thanks so much for posting again.
So... did the doctor recommend or write a prescription for something to combat the insomnia?
When I backpack, I make sure I have plenty of Benadryl (Diphenhydramine) along. I always take it the first night on the ground, and sometimes continue other nights. I know Benadryl affects some people in that they have a tough time with sluggishness after using it. I'm lucky, I guess, because I don't notice any after effects.
