Contraceptive implant.

Rebekahhh • Crazy cat lady🐱 College Student💁🏻 19y/o😎
So I got the implanon about a week ago and everyday since at night I've been getting really bad shooting pains and cramps in my pelvic area that last for about half an hour, can anyone explain this? I looked online but it's not listed as any of the side affects so I was wondering if this happened to someone else and whether it passed after a few weeks?