The First Time I Started Taking Minigynon I Had Experienced

The first time I started taking minigynon I had experienced abdominal pain and my menstral lasted more than I expected. Usually my period last for 5 days but this time it seems as if the bleeding wouldn't stop. I had to take iron tablets to stop the bleeding and the abdominal pains. Now my period is coming tomorrow and I am tempted to take the pill but I am afraid of the abdominal pains or the same symptoms that I had experienced the last time. Is there any low dosage off the pill that I could purchase.