Okay, newbie here.

So for the past two days (today and yesterday) I've been spotting. At first I thought it was bleeding and sometimes I think it'll get heavier and more red..but it hasn't. This is when I'm supposed to have my period, but it's just dark brown spotting. I read that it could be implantation bleeding. Anyone with something similar that ended up being pregnant following that? Or anyone that didn't end up pregnant? Just need opinions and personal experiences.

Edit: I've had unprotected sex recently.