I had what May have been an implantation bleeding today….

I don’t start my period for another week. I went to the bathroom and looked down at my underwear and there was a TON of dark brown discharge. No red tint at all. Is this a sign or symptom of implantation bleeding? I looked it up on google and it was a possibility it could be an early sign of pregnancy as well… 🤷🏼‍♀️🤔

Hubby and I been trying to have another one so just asking to see what it could be.