Hi there ~
I understand your concerns. You have two different problem areas. One is the hurting tailbone, which may be due to any number of conditions, a pilonidal cyst
, a small benign tumor
in the region, a skin condition, etc and you need to be examined by a doctor to determine what the condition is. The other is the lump in the cheek which also need a through examination by a surgeon to determine what the lump is and you might need an FNAC (fine needle aspiration cytology) of the area to find out what is going on.
I hope this helps. Take care and have a lovely day!