Could I be pregnant?

So I had the implant fitted on the 11th of March, 3 days after my period ended. I then had unprotected sex multiple times with this guy last night (8 days since having it fitted). I haven't experienced any spotting yet but I was at the most fertile part of my cycle last night and today.  The doctor never said how long I should of waited before having sex protected or not again since having the implant placed and now it's really playing on my mind! Any information would be much appreciated 💕