What is this ?

this is grotesque but im a bit worried, if i masturbate and but my finger in me more or less an inch and a partly down to the not here theres this lump thats a bit sore if i touch it it doesnt seem to be to be getting bigger but im not sure does anyone else hold this or know what it is?
please answer im startled it might be serious
:(
Answers:

The pill locked?

Have you scratched the inside of yourself next to a fingernail? See a doctor.

Colposcopy?

ask a doctor