CD 21 is this implantation bleeding?

Bri • 30, Mama to a 6 year old and pregnant with baby #2 🤰🏼👶🏻🌈 due July 4, 2023 🧨

My cycle is usually 28-30 days and I’m on CD 21. I went to the bathroom today and I’m noticing this discharge and it’s brown/pink. Opinions? Look similar to implantation?