I am having a red bumps on my lower lip from last 2 months, they appear burns very slightly, stay for 2- 3 days and than disappear for 1 - 2 days and than appear again this is going on for last 2 months now, sometime they hurt and some time they dont. Almost anywhere on my lower lips but 80% of time on the right side of my lower , I guess on the inside boundries of my lower lip as well. they are red or almost the color of my lip so hard to see sometime..... I have not seen any blisters though, these are just red bumps with no serum and yes I had unprotected oral sex two weeks before everything started to happen.