How can i tell if this is implantation bleeding or my period?

Bleeding: Your period most often comes at the anticipated time - the timing for implantation is prior to that. Most often bleeding does not occur with implantation. When it does occur it is usually just a drop or two. Maybe tiny bit of brown material or pink swirl in creamy discharge. Take care.

Timing & blood amt.: Implantation is when the conceptus (from union of egg & sperm) attach to the wall of the uterus. Bleeding most often dose not occur with implantation. If there is bleeding the amount is small. It may be small rust or brown colored drops or light pink swirled in white d/C. It usually occurs about ten days after ovulation. Take a home pregnancy test if you miss your period.