I noticed a pea sized lump in front of my left ear?

A couple of days ago I noticed a pea sized lump in front of my left ear. It doesn’t seem to move, and is not painful. I cannot tell if it has changed in size at all. It definitely doesn’t seem to have gotten any bigger. I cannot get an appointment with my GP for a couple of weeks, and don’t know if it’s urgent enough to spend £50 on a private appointment. Thanks.

Age: 26
Female
Medications: N/A