Hi Welcome to HEALTHCARE MAGIC..
I have gone through your query and can understand your concern...
Mild vaginal bleeding post intake of an
emergency contraceptive pill like Unwanted 72 is not a problem. The bleeding you had on 8th march must be
breakthrough bleeding which normally occurs within 3 weeks of intake of this pill. This is bleeding normal feature of intake of emergency contraceptive pill & means that intake of Unwanted 72 was successful in preventing pregnancy. You should not be much concerned about it.
This bleeding is due to high dose of
levonorgestrel in the pill, which disrupts your normal menstrual cycle & cause this type of bleeding. On 17th of march you should have your periods. This bleeding would become heavy just like a period
Don't take Unwanted-72 pill too frequently. These pill can cause
irregular periods & other serious side effects. Use condom or regular contraceptive pill regularly as method of
contraception in future. These have less side effects & are more effective in preventing pregnancy.
Refer to a gynaecologist if problem persists
Don't worry you would be fine