implantation bleeding?!

Rachel🌺 • 🎆Wife💓Mom💙 TTC baby #2!🎆

according to Glow i am 6dpo. AF isn't due til Feb.7th. This after noon when i went to pee i seen a very small amount of pink dc. Then when i went to pee again i wiped and there was very very light pink. I've felt slight cramps/pinching/twinges. My nipples are sore, lower back pain. Fatigue and a few other symptoms. took a test (not fmu and it was negative.) i never spot before my period. Could this be early perios or implantation bleeding?