what is happening?

Cerise

I have been spotting/ light period for the past 11 days now. I had the implant put in on august 10th. I was told to take birth control pills for two weeks in case I wanted to have sex. When I had sex we used a condom and the birth control pill along with the implant in me. Once the two weeks was over, my partner and I waited an extra three days before we had unprotected sex. Since I no longer have to take the birth control pill, is it okay for my partner and I have unprotected sex? What is happening? Is is a symptoms from my new birth control?