I have occasional neck pain when I sleep, so I was hoping this pillow would help me. Ever since I've been using this pillow for the past 4 nights my neck has been worse than ever. I woke up with such a stiff neck that I was unable to move it to the left. I don't know why this pillow gave me such horrible neck pain, but after only 4 days of use, I can't sleep with it anymore because I've been using heating pads and Tylenol all day the next day.