Sounds like GERD/Reflux to me as well; agree with lisam467.
I'm no expert but it's sounds like indigestion to me. I had acid reflux one time and all the lower part of my ribs hurt and my chest was aching. It felt nothing like heartburn but my doctor put me on Somac I think it was? and I felt great within a few days.
Go to your local GP he/she will be able to prescribe you some meds and you feel back to you old self in no time hopefully. Like I said I'm not an expert, but I went through something similar.