Early?

I recently have stopped taking my birth control in hopes of getting pregnant. I never took it regularly before and am certain that i had missed three pills already before trying to conceive.. its been 6 days since then and now i am bleeding, its lighter than my normal periods (i have devil periods 😂) but its still a medium flow.. i wasnt expecting my period for two more weeks, is it possible that i could be pregnant and this is just heavier implantation bleeding? Or is it withdrawal bleeding from the pill even though i shouldnt have had it for two more weeks?