Avoid pregnancy of 15 days. Medication.

Hello sir/mam, I had sex with my female friend on 3rd of july 2023 and after having sex i gave her an ipill because of unwanted pregnancy which she took within 12 hours after sex but after taking the pill she didn't get her periods till now as Today is 14th of july 2023 i. e 12 days after sex her periods didn't come as her periods due date is between 8 to 12 every months but now it's 14th and she didn't have periods yet. Moreover she told me that she had a white discharge yesterday. So I want know that is there any kind of medicine available to avoid the pregnancy of 15 days without any problem because we both dont want an unwanted pregnancy as we are unmarried yet so plzzzz help us out of this situation by suggesting a proper medication.