It's scary how this can happen especially when doctors reassure us that we're 99% protected with the pill. It is not such a rarity as people may think. I think you should just be extra careful if you think you're ovulating and see your doctor about getting a higher dose pill. I have been experiencing something similar and I'm on Yasmin which is a low dose pill. I've been on it since September and ever since I've been bleeding about 5 to 7 days before my period is due (on the sugar pills) and I've been bleeding while on the "medication pills" hence the bleeding stops a day or 2 into the sugar pills. This has never happened on other birth control before. I think I've been ovulating every month on Yasmin and therefore I believe I may be pregnant right now.
This is a quote from the website above: Again, if you're reading about CHEMICAL ABORTIONS for the first time, this may surprise, or even shock you. Most Americans are not aware that the Pill and other chemical "contraceptives" cause millions of "non-surgical" abortions each year in the early weeks of pregnancy. If you are using the Pill, Depo-Provera or Norplant, you need to know the truth about how these products work.
Most women take these "contraceptives" because they don't want to have a baby. But how many women know they can have BREAKTHROUGH OVULATIONS and become pregnant while using these "contraceptives?" Very few! And how many of these women know that if they become pregnant after a BREAKTHROUGH OVULATION, these "contraceptives" will almost always kill any son or daughter they've conceived?
SCARY!!!
Good luck!