I had protected intercourse during 25th june-1st july. But on the last date I wasn't sure if the condom was placed correctly and feared that there might be some leakage so I took an i pill. I had no bleeding after taking the pill. My last month's date of period was 18th june. And this week I thought I got my periods on 16th july but the flow is marginally lighter this month. Is there any chance of pregnancy? I'm scared it might be. Although I took all precautions.