What may have caused the bleeding intensity to increase, accompanied by weakness and dizziness when using Vibin mini?

For 10 months he has been using a vibin mini. My period so far has lasted about 5 days and has not been intense. For 2 months, the period has increased in strength, slab and dizziness have come. In this month my period already lasts 8 days and it does not look like the end. Two weeks ago, I was doing blood tests. Morphology of about 10 000 thyroid glands approx. Prolactin approx. Insulin sugar approx. 10 000 000 0 Ultrasound of the abdominal cavity of the breast and thyroid gland about Only iron slightly up the norm to 170 I have 178. Can this be due to birth control pills? And this, in turn, the pre-existing bleeding?