May nabubuntis ba sa injectable?

may possible po ba na buntis ako? first Time ko nagpainject (family planning) September 22 2023..then after 7days nag do po kami ni husband October 8 2023 may spotting po Ako October 11 2023 malakas po Ang regla ko which is umabot Ng 7days..the next month po November 8 2023 nagkaroon ulit Ako pero spotting lang po...then December, January at kasakuluyan february 2024.hindi parin Ako nireregla..may possibilities ba na buntis Ako???sana po mapansin..thank you