Hi girls I had a withdrawal bleed a few days after I stopped taking my pill (which was also the kind that is 21 days then a period/withdrawal bleed). then i had another period 28 days after the withdrawal bleed. however, from reading others' responses on here, it seems that it can vary widely from person to person. it could also be that if you ov'd later in your cycle, it might be too early to test and that's why it came up negative. I wouldn't give up hope about the negative test yet, especially given your past experience with your two dds. Good luck!