I'm a 43 yr old male with controlled HB. For the past week I have been experiencing mild to very moderate chest tightness with some pain. The pain worsens when I breathe and sometimes it's hard to breathe. It is most severe in the evenings and night. The pain can last anywhere from minutes to an hour or more. The pain is is right in the center of the chest. Resting doesn't help. In fact if I lay on my back it gets worse.