I have this bump inside my bottom lip, its a yellowish color and its a pretty big size, it received it a short while after a kiss, what is it?

Need to see it: Doesn't sound serious but should be looked at. See your physician or a Health Tap physician online. You need to upload several images in sharp focus including a close up. Best wishes.

VisualDx: Hi, it’s hard to say without a picture but there is a great app that may be able to help you get a diagnosis without being seen in person by a dermatologist. The app is called VisualDX and is one of the best, if not the best out there. Many clinicians, including myself, use it. Just snap a photo and it gives you a list of possible diagnoses. Good luck!