Implantation bleeding?

ShaLynn 💜

I am not supposed to start my period for another 5 days. Yesterday morning I started bleeding just a little, but my period is always on time if not on time only a day earlier at the earliest! How do I know if it’s implantation bleeding or just my period? my husband and I have been trying for baby number 2 for almost 9 months now! I also took a pregnancy test Sunday afternoon just because and it was negative.