Last month i had period on 11th March and got over on 14th, I had sex with my boyfriend on 15th and 16th then on 24th i again started bleeding then on 27 th i started taking Novelon for 21 days regularly without fail on same time and pack got over on 16th APR but today 7 days over but my period still not started , i check for urine
pregnancy test but it came as negative, Please advice till when I should wait for period and start another pack of Novelon.