Silvanus,
Thank you for your question.
It's a bad idea to allow your pet dog on the bed. Aside from the frustration of dealing with soiled bedsheets and mattress (the scent cannot be fully removed and continue to be a reminder) it contributes in building dominance in the dog and dominance means there is a potential of aggressive behaviour.

My friend, shut that bedroom door from today onwards for your own good.
If you don't have the heart or have difficulty doing that then I suggest only allowing the dog in the bedroom at bedtime into the room, crated!

Take care
Frankie

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