I am getting slight blood in my left nostril from months during blowing or cleaning. Last month also there were blood streaks in cough so I consulted a general physician and was on antibiotics for 1 week followed by test of chest x ray, cbc, esr and sputum culture. All the test shown up normal so I was told to discontinue. But from last week I can see blood streaks sometimes in morning but left nostril with little blood always.