Lump?

So I have this hard lump on my neck below my jaw bone. Kind of on top of my lymphnode if that makes any sense. Well it’s been there for months but it was very tiny before (hence why I didn’t see a doctor about it then. I thought it was a tiny lipoma or something). But now i have noticed it is larger than it was and can definitely tell it is hard and doesn’t move.

I know I need to see a doctor about it. My question is I already have a doctors appointment scheduled on January 5th for a wellness visit, do you think I could wait until the 5th to have this lump looked at or should I be calling my Doctors office in the morning and seeing about getting in sooner for it?

Please no rude comments. Thanks in advance for any input!