I Had Quadruple Bypass Surgery 2 Years Ago Went In

I had quadruple bypass surgery 2 years ago went in to get blood transfusions which was cause for surgery since that time they have given me 9 blood transfusions and B-12 shots and 16 injector of iron, have all the tests 2 bone marrow test all normal I just go along fine then everything bottoms out the doctor is baffled do you have anything that we might be missing.