Could be pregnant?🤔

Okay so I was being irresponsible an had sex during the first seven days that I got my implant. Anyway I had unprotected sex the 7th and got my implant the 2nd. Yesterday night i started having light bleeding and mild cramps an they stopped this afternoon. It’s still to early to test but symptoms I been having is nausea, headaches, and back pain. Any ideas?