My pain started 2 years ago, it comes frequently, one time hurts much, other not. I do housework/cleaning/etc. when my sleep time close the pain raises then it comes back to zero in the next morning. I sleep some days on my stomach and other on the side. I use soft pillow, same as my family. usually I sit on my bed or study on a chair with curved pose. my pain is concentrated on my neck and left side of my back. sometimes it's also down when I do housework.