Spotting on jan3 then two day period jan7 and 8. could i be pregnant?

Possible: If this bleeding is irregular pregnancy could be a possibility.

Maybe - take HPT: The main reason for light periods is a change in hormone levels. Causes for what seems to be a light period can include: implantation bleeding in early pregnancy, thyroid problems, eating disorders, excessive exercise, initial periods for a girl, use of an intrauterine device, oral contraceptives & perimenopause.