How is period different from implantation bleeding?

Emma • Married 22 y/o TTC baby #1 ❤️ April 2020 👼🏼 May 2020 👼🏼 TTC 12+ months Cycle 1 Femara❌ C2 ❌ C3 ❌ C4 ❌ Due January 2022 with our 🌈

Symptoms: cramps and bleeding 3 days before period due, negative tests, blood dark brown