I'm home! Here is how the appointment went: I got into the room to wait for the doctor and the nurse came in to take my blood pressure, pulse, etc. Then she looks at the lump and told me it was most likely a tooth abscess. I asked her what would happen if that is what it was, and she replies, "If it bursts you'll swallow poison." Um, hello?! Who says that to someone? After she said that I panicked. Then the doctor came in and checked it and told me that it was simply a cyst. I have to go to the ENT doctor with my mom tomorrow to have it checked by him to confirm everything. He is either going to leave it alone or want to get rid of it - and I hope it's not the latter! Otherwise they'll have to cut underneath my jaw to get it out.
I'm glad that is done with because now I have peace of mind that it is nothing serious to worry about. Hopefully tomorrow he'll tell me just to leave it alone!