I am sexually active, and I am on Low Ogestrel Birth Control pills and have been for over 8 months now, but don't use condoms, My period has been regulated due to the pill and has came the last Wednesday of every month since I started birth control, and has been regular and lasted for about 4 days, I have never spotted before, and I started spotting when I was supposed to have my regular period, and I am still spotting and my period day was Wednesday, What does this mean?

We can't know online what it means, only what it might mean.
- Just an unusually light period this month, very common
- Pregnancy, despite very low probability on the pill
- Beginning of menopause