1 hard lump on cervix

Hello. I'm 22 years old and a few days ago I noticed a small hard lump on my cervix. I only have the 1 and nothing else. I did have brown bleeding a week before my period this month but I know thay can be normal. I'm wondering has anyone had experience with just 1 small hard lump on the cervix and what it turned out to be? I have an appointment Wednesday with the doctor but that seems so far away. I'm very worried and scared about this. It does not feel puss filled just like a lump really

 

Thankyou