"i had the implanon inserted 17 months ago and everything was going great up until the 16th month. i started feeling crazy moody and fighting a lot more with my boyfriend about things that never use to bother me. i am extremely moody and have irregular periods. i think i am going to remove it because i have also noticed that it has made me super anxious. i have a constant tightness in my chest and i was never like this. i have also been super jealous and moody like never before. i&#039;m really considering taking it out soon."