she taken I pill from piramal lab, india...

Hi,
Welcome to ehealthforum,
For a regular menstrual cycle of 28-30 days, the usual fertile days would lie between days 8-18 taking day 1 as first day of bleeding. If she had just finished with her periods, she would have been in her safe period. If she has taken the emergency contraception within 48 hours of unprotected intercourse, it should help in preventing pregnancy (provided you were not sexually active without protection after taking it). The bleeding that she had after few days of taking emergency contraception could be the withdrawal bleeding that occurs within 5-7 days of taking the emergency contraception. Since the emergency contraceptives contain high doses of hormones, these can disrupt the normal hormonal and period pattern causing period/bleeding abnormalities and appearance of new symptoms. Wait and watch for her next periods which can be delayed. To arrive at the next expected period date, count the usual menstrual cycle length starting with first day of the withdrawal bleed. She should visit her doctor/gynecologist for further evaluation if periods are missed or abnormal, or if she suspects chances of pregnancy. If pregnancy gets ruled out and if you intend to remain sexually active, you should consider getting her started on suitable regular birth control measures to be protected (after her periods). She should be regular with birth control use as instructed. Avoid having unprotected sexual contact and avoid repeated use of emergency contraception.
Take care.