pregnant on implant?

I had my implant inserted Jan 4 and had sex Jan 15 (10/11 days after bc time of implant and having sex varied). He didn't cum in me. My doctor said I could have sex 7 days later, but online sources say 7-10 days so I'm worried.. Should I take a pregnancy test? Or am I just worried because I'm new to this and I don't trust it?
*and yes we both got tested for diseases in case someone tells me to use condoms*