Am I out this month..

So my period is due in 2 or 3 days.. TMI today I started lightly bleeding (only a tad bit on a tampon) none when I wipe.. its is a reddish -brown... I'm sure it's Af slowing coming but could it be implantation? Anyone had this and found out they were pregnant.. I'm almost positive we are out for the month but there is a little hope in me saying we might still have a chance!! Thanks ladies!!