Extreme pain in middle of my chest, but my back hurts straight behind that pain, it almost goes around.  It is not gall bladder, I'm  had that taken out.  Could it be a bleeding ulcer?  Recently, my doctor said I have internal bleeding somewhere, could it be pain from an ulcer or could it be my heart.  I have no pain in arms or jaw, just center of chest and middle of upper back.  This is the second time in two weeks.  It goes away after about one hour.  It is so bad, it makes me double over in pain.  It's important to note that my back hurts as much as my chest - I'm not finding that in heart symptoms.  My doctor says I have very few red blood cells and I'm bleeding internally somewhere.  I'm taking lots of iron and potassium.  I have no insurance and a specialist won't see me, I can't afford a lot of tests.  The blood test I had cost $1,700.00 and used up what insurance I had left for the year.  The two times I've had chest and back pain it was quite severe.  Tonight is the second time.