What's your blood pressure? Could be that pressure is building up in your kidneys and heart. With all the cancer, you better get it checked out.
I was affected by the same thing. I found that I was low in calcium. I had been eating high protein bars. Some very high. I didn't realize the protein was leaching out any calcium I had. Symptoms were, chest pain, kidney pain, shakey muscles, and loss of feeling in hands and fingers. Also cunfusion, brain fog adn fatigue. Once I started calcium tabs 1500 mg. per day and stopped the bars, symptoms began to go away. Kidneys were hurting after the chest pain. Since Calcium is needed for proper muscle function, it was obvious then what had happened. Then kidneys had to deal with all the protein. Went on better diet along with plenty of water. Still healing.
Hope this helps.
how long did your chest pain go on for and did you have all over back pain. also did both kidneys hurt.