https://www.healthcentral.com/article/lay-down-left-side-only-when-awake-will-terrible-chest-pain-will-not-hurt-touch-hurts-breathe-deep-breath-feel-pain-left-side
Heart Health

If I Lay Down On My Left Side Only, When I Awake I Will Have Terrible Chest Pain. It Will Not Hurt To Touch, But It Hurts To Breathe. If I Take A Deep Breath I Can Feel The Pain Only On The Left Side.

    Answered by Lisa Nelson, RD, LN
    You should know: The answer above provides general health information that is not intended to replace medical advice or treatment recommendations from a qualified healthcare professional.