Dr. Hanif warmly Welcomes you! Thanks for consulting at my virtual clinic. I have carefully worked through your case, and I can realize your health worries. Being your physician, I assure you not to worry as I will take care all of your medical concerns. It is definitely a gastroduodenal Ulcer and the black stools, heart burn, pains (no matter in which area of abdomen it is) all suggest that you need an immediate gastroscopy. Black stools are due to bleeding ulcer and you feel short of breath due to low hemoglobin. I preferably suggest you to consult a Gastroentrologist right away. He will go for a gastroscopy after careful physical examination and assessment. Also ask him to go for a Complete blood count to see your hemoglobin levels. The treatment will be according to the diagnosis. But for now, start with Omeprazole before breakfast, until you get an appointment for consultation. Hope I answered all of your health concerns . If you have further questions in future, feel free to contact me anytime. In the start of your question write my name, and I will get back to you in no time. If satisfied, please click you found it helpful. Have a wonderful time ahead. Best Regards! DR. MUHAMMAD M. HANIF USA