birth control
"First i had explanon then they changed it to nexplanon. This is my 3rd time having it in so safe to say i love it. I have 2 periods a year sometimes last 2 weeks sometimes a couple of days.  I do get very light spotting from time to time. I have gained plenty of weight but not in the right places. I do cramp even if i get no cycle but doesn't bother me.  I have never had a scare n i love 2 cycles a year.  Works soon as you put it in. Stops working soon as it is out."