I Had Unprotected Sex With My Wife On 15th June.

I had unprotected sex with my wife on 15th june. Her 1st day of period was 10th june(28 days cycle). To avoid pregnancy, she took Unwanted 72 after 3 hours. She had light bleeding from 22th june for 5 days in the morning. She has pain in breast, below the navel and her legs. Are these side effects of unwanted 72 or early symptoms of pregnancy. Please help