Sounds like a sinus infection. The blood is most probably from your nose. There are a huge number of veins in your nose and even a dry house can cause bleeding. You can use vasoline in your nose but I buy Ayr and use it instead. It's safer. You should see your doctor about the sinus infection. The best relief I got was a prednisone shot. All your symptoms sound like sinus to me.
According to the Mayo Clinic, a sinus infection occurs when bacteria or a virus settles in the nasal cavity, causing the sinuses to become inflamed, which leads to nasal congestion, sinus pressure pain and nasal discharge. A common symptom of sinusitis is a thick, yellowish-green discharge from the nose with a mixture of blood, according to the National Jewish Medical and Research Center.