I've been on the pill for about 10 years now. I always start my cycle on Wednesday, and it goes strong until Sunday when I start taking my active pills again. This month, I didn't get anything until Friday morning, and barely bled at all, and it was gone within 24 hours. I don't "feel" pregnant, but my metabolism and sleep schedule are both unusually off, which I attributed to going back to work full time after being unemployed for 4 months.