I can't sleep through the night because my runny nose wakes me up in the middle of the night. I have crazy sneezing attacks and a snuffed up nose the rest of the night. As far as I know I don't have allergies and this only happens at night once I have been up and moving for the day the sinus problem goes away.
It does sound like you are sensitive to something in your bedroom environment causing the symptoms, most likely dust mites, mold spores or animal dander if you are around animals.You can take antihistamines to help the symptoms if you can't identify and remedy what you are sensitive to. Over the counter loratidine, zyrtec, or allegra, or benedryl (sedating) can help. A steroid nasal spray like flonase can reduce the nasal congestion if you do the nasal spray before going to bed.