My father is 83 years old. He was in the hospital last week for low hemoglobin (6.9) They performed a colonoscopy and endoscopy and found no bleeding. In the meantime, they gave him two units of blood. He was sent home on Friday and we have an appointment with a hematologist tomorrow afternoon (earliest appointment we could get). Since coming home, he is unable to walk more than a few steps. He gets out of breath quickly though has no pain and is in good spirits. We can t figure out what is wrong because he is almost immobile. If his mind is sharp and there is no pain, should we still be worried about waiting until tomorrow afternoon to see a doctor?