Implantation bleeding??

Alexia

So I’m currently in my TWW! Today is July 18th... my period was due to start yesterday the 17th but it came the day before yesterday on the 16th! It started out pink at first but it ended up this rustic color and literally only lasted 2 days! Today the 18th, I HAVENT SEEN A DROP A BLOOD EVEN SINCE THIS MORNING. It’s 11:50 pm! Could this be implantation