Hi, My Partner And I Been Having Unprotected Sex This

Hi, my partner and I been having unprotected sex this morning at around 8:00 AM. Every other day, my partner will normally ejaculated outside from my vagina to avoid pregnancy. However this morning, he pulled it slightly late than he normally does and it ejaculated near my vagina (lump on labia majora) and this has never happened before. We straightly went to nearest pharmacy to get Postinor 2. Since my partner and I had sex four days before my ovulation day, the pharmacist suggested me to eat the two of Postinor 2 tablets at once (instead of waiting for the second tablet exactly after 12 hours after the first).

I ate two tablets of Postinor 2 at once two hours after my intercourse. Is there any chance by eating two tablets at once may disturb the process of preventing unwanted accidental pregnancy?