Welcome to Healthcare Magic How many days late are you since the expected day of start of your periods. There could be many possibilities. If the D&C was done after abortion then scars would have formed inside uterus and caused blockage of menses to come. There could also be presence of cervical stenosis which can also be due to D&C. If you have not had D&C the causes could be presence of Fibroid which is blocking the cervix and causing block of menses blood flow. Even certain hormonal disturbances like big ovarian cyst can cause such a problem. It is best you wait for 7-10 days from expected start day of period till period starts and if it does not come then you need to do a Pregnancy test. If pregnancy test is negative then consult Gynaecologist to examine you and look for such mentioned problems. Drink plenty of water. Avoid constipation by eating plenty of fresh fruits and green leafy vegetables. Do daily brisk walking for 40 minutes.