I'm late! implanon? or pregnant?

Bridgette
Girlies!!
Ok so not major but to let you all know the dilemma... I'm 7 days late for my period. I've been bloated for the last week. I've got the implanon rod inserted in my arm for contraception.  I've spoken with my partner about if I should take a test or wait a little bit longer to see if my period is just late due to the implanon rod. 
What do you think ? 
What are some symptoms of early pregnancy that you've come across?