I am a 42 year old male and for the last several weeks have been having stomach cramping and pain, intensifying as time goes on. I have a BM each morning. However, the stool has a black, tarry appearance and the diameter of a pencil. I often feel nauseous when swallowing. I also have persistent rectal odor, one that showering three times per day does not remove. I have virtually no appetite and feel very lethargic. Having no health insurance, I feel helpless and do not know where to turn. Any ideas would be greatly appreciated. Thank you.