Melatonin is also a pill which helps the substance in your brain kind of even out. You can also get it over the counter.
I do not have ocd, but I do have trouble sleeping, for other reasons. I have severe anxiety and depression. I went through quite a bit in my life where Im not always functional.
You can PM me if you'd like to know more about it.
But all the things that have happened to me have affected my sleeping and other daily things.
Take care,
-Megan-