I have been searching google and couldn't find anything, I was wondering if sleeping on your left side on your cheek for too long can cause pain? I slept really hard last night and woke up today with a tender bruised type of feeling on my left side of my face. It's not my teeth or a headache just where I laid my head down. Can sleeping really hard or in the same position for too long cause that type of pain? Ibuprofen and tylenol are not helping and I wanted to make sure it is nothing to serious. Just a case of really good sleep lol.