birth control
"I had Implanon for 5 months,then had it taken off.
Good: -practically certain of not getting pregnant; -not having to remember it; -bigger breasts.
Bad:
Menstruated or had spotting for almost 3 of the 5 months, and menstruated in more quantity.
Had 3 months of premenstrual syndrome (mood swings, irritability. Very bad for my mental health and relationship.)
Worsened my rhinitis allergy,  also very disruptive. My nose was inflammed like in rhinitis, despite maximum rhinitis medication. 
Not so easy to stop: as it requires minor intervention, I kept waiting that side effects would pass.
I advise trying oral progesterones a few months first.
Not advisable for low stature and weight (55kg), bad PMS, depressive history or rhinitis."