Implantation bleeding??? Please help. TMI

So I last had sex 15 days ago. We used a condom AND I'm on the pill. I get home today and see this so I'm kind of freaking out. I started a new pack 10 days ago so I was on the placebo week when we had sex, but with the condom and him not coming in me I thought it would be okay. It was the day before my period. What does this look like to you?? Not having a great time right now. Thanks 😶