Mild cramping and light spotting in the first few weeks of a new birth control pill are common as your body adjusts to the hormones, and this doesn't mean it isn't working.
Next Steps
Keep taking your pill at the same time every day without missing a dose, since that consistency is what protects you from pregnancy. If spotting continues past one or two cycles, or gets heavier, mention it to your gynaecologist.
Health Tips
See a gynaecologist sooner if the bleeding becomes heavy, the pain worsens, or you miss a pill.