Not sure what this is

[ohthisstar]

I'm getting over a cold.  I have no more sneezing and I have no cough, no sore throat.  What I do have is pain in my chest.  If I breathe too deep, if I walk up stairs or walk too much it starts to hurt and when I bend over it hurts and I get a shortness of breath.  I also can only sleep on my back because it is too painful to sleep on my side.  I'm trying to hold out until Monday when I can get in to my doctor.  I've had this since Wednesday but last night it started getting worse.  I was wincing when I was walking because it hurts.

So yea this sucks.  I have no idea what is wrong with.