My period has recently been acting up a lot over the past few months. Two months ago it was 6 days late. Last month it was 5 days late. This month, I was supposed to get it 8 days ago and I haven't gotten it yet. Could I be pregnant?
Many women do not have regular periods and same is true with your case. If it is only a recent change with a gynec work up you shall be able to figure out the cause and fix it up as well.