birth control
"I had this inserted in 2007, the anesthetic needle pinched a bit (used to numb the area) and after that I didn't feel a thing. I had bruising in my arm where it was inserted for a week after and it was a little itchy but I didn't feel any pain. I took care not to use my arm too much. 

I didn't get my period until 13 months after and then it was very irregular and there were times when a couple of months passed and I didn't have a period at all. My periods lasted for the same amount of time as previous to the Implanon, 5-7 days. The period pain was as before.  The side effects I noticed were weight gain - about 10 kilos off and on - and my mood. I got cranky easily and people close to me noticed I was a bit more moodier than before."