My husband has been having chest pain, shortness of breath, and no energy for a while. He has a stint (4yrs ago) and had a heart attack 18 years ago. He just had a heart catheter last Wednesday and it came back negative. His EKG was fine. He is not himself. He rarely complains or is sick but I can tell something is not right. He takes heart meds, is Type 2 Diabetic and takes meds, takes Aderall for ADD, Zoloft for anxiety and has a CPAP for sleep apnea. All his issues are taken care of by meds, except his chest pain. I'm thinking the next test the doctor wants to do deals with his lungs. His testerone level is on the lower range of normal. What do you suggest he should do?