Hey mama! That's not really normal kaya best to check with your OB talaga, injectable contraceptives usually regulate your period, not make it come twice, at ang spotting or irregular bleeding ay possible pero two full periods in a month is something your doctor should look at para malaman kung may issue or kung need to switch methods. A few of us tried different contraceptives at nakita namin na bawat body is different, pero yan talaga ang reason bakit important ang follow-ups with your doctor. Hope you get it sorted soon!