Suggest Remedy For Blister Like Bumps In Lowe Lip

Ok! I have had this bump "blister" on the inside of my lower lip now going on roughly 3 weeks. It does not hurt except when i accidently bite it when I'm eating. every three or four days once it swells up I can pop it like a pimple and a clear liquid comes out. That does provide some relief as the bump is then gone for a bit leaving a "open sore" that resembles a blister when the skin is torn off! However it keeps coming back and now I am starting to freak out. I have called my doctor and made an appointment for next week to get in but my mind won't stop racing. Again it doesn't hurt to pop it nor does it really hurt just being there. I think it hurts as it gets bigger when I bite it just due to the fact that I'm technically biting my lip. No matter how many times I pop it, it won't go away. It just grows back into that blister. All these articles online are freaking me out as well. Saying cancer and so on! The Mucocele thing I've read about seems to fit the description!