I know this may sound silly but i think that dreamcatche really interfer with your dreams.
One night 2 years ago my mum bought me a dreamcatche because i had been gettin sleepless nights and she thought it would make me feel safer, anyway i actually fell asleep that night with no problems, i had a terrible nightmare though, that this old man with scars and cuts and he was covered in blood and grey hairs creepd up to me in my bed and stole my dreamcatcher and then murdered me and my family. I told my mum and she took it back to the shop but didnt complain because we couldnt say it was the dreamcatcher that made me have a bad dream (thats a bit silly, so i thought)
and when she was walking out the shop assistant man said 'was it him?' to my mum and m mum was like 'pardon?' he said that several people had purchased and returned this dreamcatcher because it gave them dreadfull nightmares and it came from africa and the family who owned it all got murdered by a old scarry faced man with blood and grey hairs all over him. That really freaked me out but we gt rid of all th dreamcatchers in our household now so i feel safe.