Question
If you are unclean but unsure about it and you go sleep does your bed become unclean too. And what if you are in a place where you can’t get cleaned
Answer
Yaqeen (certainty) cannot be eradicated by shak (doubt). After you are certain that the bedding was clean it will not be considered unclean until you have the same level of certainty that it is unclean. So, you should avoid shak, otherwise you will suffer the disease of wahm and your life will become a turmoil.
When you say “if you are in a place where you can’t get cleaned” I don’t undersatand what you mean. Please be more specific, you have to clean yourself no matter what happens otherwise salah will be void.