Hi.. Welcome to HEALTHCARE MAGIC.. I have gone through your query and can understand your concerns.. Red bumps at the back of throat along with sore throat is pointing towards a condition known as Granular Pharyngitis which can be due to either bacterial or viral throat infection.. For confirmation consult an Otolaryngologist and get evaluated and a thorough clinical evaluation and investigations like Throat swab culture can help in diagnosis.. You can be advised a course of antibiotics like Augmentin, anti inflammatory painkillers like Ibuprofen, doing warm saline gargles, steam inhalation and using a humidifier in your room can help.. You can also suck throat lozenges, chew Vitamin C pellet and avoid spicy and chilled foods.. Hope this information helps.. Thanks and regards.