I have a bump near/almost on my lower lip. it is big filled with white/yellow pus. is this a cold sore?can cold sores be one bump or always acluster ?

Folliculitis?: It may be infection of a hair follicle, it could have been triggered by a cold sore and one does not exclude the other. Do not try to pop it. Popping runs the risk of sending bacteria into blood vessels and also leaves a bigger scar. You may apply warm fomentation to facilitate healing. Wish you good health! - Have a diet rich in fresh vegetables, fruits, whole grains, milk and milk products, nuts, beans, legumes, lentils and small amounts of lean meats. Avoid saturated fats. Drink enough water daily, so that your urine is mostly colorless. Exercise at least 150 minutes/week and increase the intensity of exercise gradually. Do not use tobacco, alcohol, weed or street drugs in any form. Practice safe sex, if you have sex. Get HPV vaccine