I've been off bc sprintec since may and bled twice each month until this month I had a normal period what does that mean?

Not much . After coming off birth-control it may take a few months for your cycles to regulate. If you continue to be a irregular off birth-control then consider restarting. Birth-control is excellent giving regular periods.
Birth control. It means your menstrual cycle is gradually coming back to its normal pattern. This can vary in time from individual to individual.