So tired and lethargic with bruised ribs, what's wrong?

See your doctor. You are portraying potentially serious symptoms. Call your doctor and if your doctor is unable to see you quickly, go to urgent care or emergency department. Tired and lethargy could be due to serious condition and if it is related to trauma, you need assessment for any potential injuries. IF it is related spontaneous bruising, this will can portend more serious problems. Please see a provider now.