Hi,
I will suggest you the best possible treatment options.
1) First of all do not panic.
2 ) As per your history, you had unprotected sex act, and there was penetrative sex also. Spillage of semen inside and around vagina or in case of withdrawal method sperms in the pre-ejaculation secretions can lead to
pregnancy.
3) As you have mentioned that you have taken emergency
contraceptive pills within 24 to 72 hours of unprotected sex act, it is quite effective in preventing pregnancy. Usually 95% women get successful results with proper use of this method. So do not panic.
4) If at all you do not get withdrawal bleeding after emergency contraceptive pill, please rule out pregnancy by getting urine pregnancy test on morning's first sample of urine or blood
beta HCG test 15 days after your unprotected sex act.
I hope this answer helps you. Let me know if I can assist you further.
Thanks,
Dr. Purushottam Neurgaonkar