am i in the clear

hi guys so i’ve had the arm implant for almost a year now and about two months ago stopped getting a period which is fine and normal because it takes your body time to adjust. here’s my concern. a guy i was hooking up with finished inside of me (i wasn’t aware till after). i know that the birth control is one of the safest but i’m a very anxious person. do any of your partners finish inside you with the implant? because i don’t get my period it makes me a little more anxious. should i take a test in a couple weeks just to be safer than sorry?