concerned

hey guys , so recently i have gotten the nexplanon implant on nov. 30th. and i was suppose to start my period on dec. 6th. last time i had sex was nov. 27th and the day of the appointment i came out negative in order for me to receive the implant (i forgot i had the appointment). but it’s now the 10th and i’m concerned if i’m late because of the implant or i might be pregnant. also on the first day my period was suppose to happen , i took a pregnancy test that day and the day after , they both came out negative. should i get another test or this nexplanon implant is messing with me.