most common cause of bleeding from Nose is injury to the septum of nose especially near the tip of the nose where it has got rich blood supply, medically this area of septum is known as little's are. most common cause is self inflicted such as nose picking and sometimes any other type of trauma can also cause this usually this will resolve once you give adaquate time for it to heal during episodes of bleeding bend your head and pinch the nose for few mins consult nearby ENT specialist if your symptoms persists so that he can cauterize the bleeding point

Use a nasal decongestant drops like Otrivin and then meet an ENT specialist near you..................