"true effectiveness against pregnancy but i would definitely not recommended it!!! i had to get it removed!!!! i literally had a head ache that never went away!! major migraines! i had lower back pain as if i was getting contractions.. i was so miserable! i could also feel it poking out through my skin! if you grabbed me touched a certain way it would hurt! i know taking the pill is a drag but i think out of all the methods that&#039;s the best!"