Thank you for your query.
It is entirely possible that this maybe implantation
Also, it maybe an abnormal period ( early, crampy and scanty ).
Causes for this could be a routine occurrence if its just an isolated period that has been this way, stress, anxiety, emotional trauma, frequent travelling, intake of hormonal
medications, rapid changes in weight etc.
disorders , polycystic ovaries
and endometrial conditions could cause such bleeding.
You need to consult your Gynecologist for exact diagnosis and treatment.