TV's Teen Mom Goes To Prison

Law enforcement tells TMZ, 22-year-old Amber was transported from a local jail to the Rockville Correctional Facility at approximately 7:45 AM.

TMZ broke the story ... Amber was sentenced to 5 years in prison for drug possession back in January -- but the judge offered to keep her out of the big house if she completed a drug program.

Amber took the offer, but eventually quit the program -- deciding to serve time in prison instead.