Hi thanks for contacting health care magic. You can have respiratory infection like bronchitis along with sore throat.... It could be viral or bacterial infection. In bronchitis spitting of blood in sputum can occur .. Here along with antibiotic coverage symptomatic management done... Drink lots of water... Steam inhalation also helpful. To relieve congestion antihistaminic drug can be taken.... Turmeric root powder one tsp in hot milk cup taken that is good for respi infection. If posterior pharyngeal swelling more then short course steroid taken.... Post nasal drip or excess mucus can lead blockage.... Hope your concern solved. Consult physician or ent surgeon and discuss all this.... Take care. Dr.Parth