Is it common to have mole/s inside inner lips of vagina? If so, are they usually cancerous? Severe anxiety and very worried

I have a mole inside my vagina on the inner lip. I have had this for quite sometime, years actually, I never gave it much thought. But, after some research I am terrified this is cancerous. It is a flat, not raised , light-medium brown mole probably about 2mm. I am going to make an appointment to go see my ob/gyn this week, but I am very concerned. I have severe anxiety disorder, especially when it comes to cancer and just hoping this is normal.