 [ Symptoms ] i have a white bubble bump on my lip it does not easily pop and it keeps coming back i have now had it for 3 weeks [ Disease ] well unfortunately it is impossible to diagnose this without a physical exam any skin lesion that persists for 3 weeks is worth having checked out by a medical professional you can start with your primary care provider or a dermatologist i would not worry about this too much in the meantime but i would definitely make an appointment to get it checked sorry i can not give you a better answer