hello Doctor, I had angioplasty 3 months back. one stent inserted. I am on Telma 40mg, Glycomet 500mg, Nicoran 5mg, Ecosprin 150 mg, Prasugrel 10mg, Atorvastatin 40mg. So far I am good, today I have observed a thin coating of blood in the stool. What could be the reason and how to address it?