Problem with sleep?

Hello guys, i have a problem with sleep... i never had this before but when i am going to sleep i am very nervous because i dont know what happens when we are asleep because we dont have consiousness and where are our thoughts when we sleep... those thoughts make me feel anxious and i finally sleep but after a long time and because of that i am getting less sleep.. answer me if you have any idea and sorry from my English
Problem with sleep?
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