For at least 2 wks,I have been sleeping on a hard cushion,that I took off my couch,it is very firm,I slept on it for at least two weeks,I noticed a slight prepositioning of how my neck was,but didn t think it was anything abnormal,I m also a text freak,and I don t hold my head up right all the time, now I have a bony lump like that is kind of like at the base of my spine on the back of my neck,right before u touch my back hairline what could it be? I notice it after sleeping on my hard couch pillow for some weeks,remember,I am also a texted with poor head posture sometimes