Implant badly bruising?

Mary xx • Mama to one beautiful boy
Hey all, I've had my implant for 6 days now, and the bruising is still slightly aggressive. I'm not too sure if that's just my body reacting to the foreign object in my arm, or if I have some sort of deficiency in iron or something of that nature! 
I'd really like to know if anyone else's implant bruised like mine did! 
I also put arnica on the bruising nightly to bring out the bruise so it can heal a little faster. Not too sure if it's working though.
Thank you!