Aww, I'm so sorry you're hurting and can't sleep. It happens to me often, but usually not from pain.
I keep Friendship Tea made and a cup of that usually puts me right out, even though there is nothing in it to cause drowsiness. Has just always effected me that way, which is a good thing if I want to sleep, but not such a good thing if I just crave a cup. lol
Hope you can get relief soon.
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Carol B