"i had the original impalanon in for three years then had it removed to have my daughter , after i had her i wanted it back in but learned they now had nexplanon and figured i&#039;d try it i didn&#039;t have problems with the other my periods even stopped . with this nexplanon i&#039;m 22 and constantly feel like i&#039;m going thru menapause my periods are so bad ,  weeks sometimes days before in suppose to start i get really bad heat flashes that make me sick !! i&#039;m losing so much weight my wedding ring doesn&#039;t fit anymore , .  i&#039;ve also had a lot of depression with this , i almost feel as if i&#039;m bipolar "