Hello dear
I understand your concern
You have did sex just after the period ends on 20th date.
It is your completely safe period for the
pregnancy as there is no ovulation and fertilization will occur.
Again yo took P2 tablet with in 24 hours and it is highly effective in preventing pregnancy. It has just 0-5% failure rate.
Your period could be delayed by the
I pill.
If period will not come in next 4-5 days then go for urinary pregnancy test and or blood
HCG to confirm the pregnancy by consulting the gynecologist.
If you will be pregnant then you can terminate the pregnancy by
abortion pill under the advise of gynecologist.
Avoid
stress, take healthy diet, drink plenty of water and do regular exercise.
Hope this may help you
Contact further if follow up needed
Best regards
Dr. Sagar