Qlaira is not 100% effective its about 99% effective,their may be a less then 1% chance that you may be pregnant, some times the hormonal
changes are related with amount of stress and type if food may also change the metabolism
of the drug intake.
1) Stop panicking, calm your nerves.
2) Now I would recommend you to wait for 5 more days, do not take any medication. Make sure you use barriers (condoms) for contraception
3) Their are urine pregnancy
test available in the market and I insist you to buy one and test your urine. ( If it says negative first time wait for a 5 days and after then redo the test, if still negative it means you are not pregnant).
4) If no bleeding after 5 days consult your OBGYN
Hope it helps.
Dr. JAY PATEL.