Thanks for the query.
If you are around the period of ovulation, then there is possibility of pregnancy
If your partner is having doubt about ejaculation better to take preventive measures.
Yes, you can take combined pills for the purpose of emergency contraception
You can take the pills as you mentioned.
Better to take some regular method of contraception in future to avoid these problems.
For more details you can ask me through: http://www.healthcaremagic.com/doctors/dr-sree-gouri-sr/63429