Implantation bleeding 3dpo?

Stormy • I’m Stormy and I’m 26. I am mommy to Riley Renee 1/22/15 💖 and River Garrison 1/11/19 💙

Is it possible? I may have timed my ovulation wrong but I charted cm and had my ewcm on the 29th so estimating ovulation to have been the 30th. Today I had some brown tinted spotting. Af not due until the 12-14th time frame. Cm today is the glue/milky looking. Not really sticky though. Thoughts or similar experiences?