Hello Thanks for the query Bleed from the stomach ulcer often comes out as clots which can look like dead skin, as you have already been diagnosed with gastric ulcer I dont think further investigation is necessary for the bloody stools. Please continue taking the medication prescribed for it. I would like to add here that bleed from the gastric ulcer can show up in the stools upto 5 days. Also I suggest 1. Do not eat spicy food, milk and milk products 2. Abstain from alcohol and smoking 3. Have meals at regular time intervals, eating smaller meals several times a day is ideal instead one large meals thrice a day 4. Avoid bending exercises 5. Do not sleep immediately after dinner I hope I was of help Regards