nexplanon & periods

i got my nexplanon implant fitted 4th July 2019 and i was due on my period that day but it didn’t arrive which i’m not too shocked at as i’m irregular as it is, its been almost 2 weeks and i’ve still not got my period, should i be worried?

ps. i did have sex the week before i got the implant but we used a condom and he didn’t ejaculate in me anyway