"i got nexplanon on 6-10-13. and i also play sports(softball) involving movement with your arms. the insertion did not hurt whatsoever besides the numbing shot. (and i hate needles!!) if you look at the tool to insert the nexplanon you will get freaked out. don&#039;t look. i have bad bruising on my arm where it was inserted, and due to me playing sports, it hurts to move in certain directions. since i&#039;ve only had it for a week, the bruising and pain should start to fade away soon. but hey! i rather have pain than be pregnant."