While fears and anxieties can vary widely from person to person, what you're describing sounds like an intense and overwhelming fear related to the cleanliness and sanctity of your bed. It's essential to understand that what you are experiencing might be a specific type of anxiety or obsessive-compulsive disorder (OCD).
If this fear is significantly impacting your daily life, causing distress, and interfering with your ability to function normally, it could be beneficial to seek support from a mental health professional. They can properly assess your situation and provide a diagnosis, if necessary, and guide you through evidence-based treatments, such as cognitive-behavioral therapy (CBT) or exposure and response prevention (ERP).
In the meantime, you might find some relief by practicing self-compassion and challenging the validity of your fears. Recognize that it's okay to have concerns about cleanliness, but when these fears become extreme, they can be managed with the right support.
Remember that seeking professional help does not mean there is anything inherently wrong with you. Mental health professionals are trained to provide support and guide you through difficult emotions and experiences. It's essential to take steps towards addressing your fear and finding ways to cope with it effectively.