I had sex with my girlfriend on 18th May with protection, but was not sure about the condom. So she took Unwanted 72 on 20th May. She had bleeding on 21st May which continued for 3 days. She had her period on 14th May and ended on 17th May. To be sure, she had a pregnancy test on 28th June. The result was negative. She is perfectly fine but till now she did not have her period since then. Is she pregnant? Or is she having any problem? One more thing, she was having irregular periods before such incident. And this is the first time she had Unwanted 72. Please advice.