Brown/reddish discharge days before period...

Jfiend
My husband and I been ttc baby #2 for 7 months now, a few days before my period I noticed brown/reddish discharge every time I would wipe, I have no menstrual symptoms...little cramps here and there...I'm now a week and 2 days late...took a pregnancy test turned out to be negative...could the brown/reddish discharge be implantation bleeding? Should I test again?