Implantation bleeding question

Lauren

About 30min ago I wiped and it was light brown on the toilet paper. By this app I’m supposed to start my period Wednesday but I usually don’t start until the day after sometimes. I’m not having any symptoms of period or anything else. Sometimes I don’t. My husband I had sex o believe 2 days after Valentine’s Day. What do you guys think 🤔 🤷🏼‍♀️