Okay this might sound childish I'm only 19 so I'm curious. But, I got the nexplnon after my daughter was born over a year ago and I haven't had a period since I got my nexplnon put in march of 2016 then out of no where I got a heavy period? Could anything cause this? Or is this normal? Also could it be because I've been having more sex recently than I am used too? Just curious..