Hello and thanks for your query.
I shall make an effort to provide you with good professional recommendations specific to your questions.
After consuming the post coital pills, your next period should start within the next month, although it might come a few days early or late.
Post coital pills are highly effective taken within 72 hours of
unprotected intercourse. As you have consumed within that time, you are less likely to be pregnant.
I advice you to perform urine
pregnancy test, it is more sensitive if you perform it after week of expected missed period and also with morning sample of urine will be more sensitive.
As a drop of pre ejaculate is enough to make pregnant, hence I advice you to consider one or the other method of
contraception if you don't want to get pregnant.
I advice you to see OBG specialist for further help.
Yet again, I duly appreciate your query to me, I do hope that you have found something useful to help you and I shall be glad to answer any further apprehensions.
Sincerely,