Vaginal bleeding is considered abnormal if it occurs outside the normal menstrual cycle, during pregnancy, or after menopause. Although there is often a simple explanation, you should always see your doctor if you have any abnormal vaginal bleeding. If you are pregnant & you are bleeding, you should consult your doctor or nurse / midwife at once.

WARNING:
Bleeding in Pregnancy - If you have any vaginal bleeding during pregnancy, you should contact your doctor or nurse / midwife urgently. Although most causes of bleeding are not serious, it is important to rule out MISCARRIAGE or a problem such as a low-lying placenta or partial separation of the placenta from the wall of the uterus.
Hormonal Contraceptives - In the first few menstrual cycles after either starting hormonal contraception or changing to a different type of contraceptive pill, spotting is fairly common. If abnormal bleeding persists or develops when there have previously been no problems, you should consult your doctor. He or she may examine you and change the dosage or type of hormonal contraceptive that has been prescribed.