Welcome here on Health Care Magic Dot Com.
I am very much concern of your problem.
I think I will certainly able to help you out of this condition.
In my view this ecp has to be taken after sex and with in 72 hour.
Its dose is 1.5 mg as a single dose.
Or you can take 0.75 mg one tablet and second after 12 hour.
If tablet taken other way increases the risk of pregnancy
so is your case.
These ecp should be used rarely rather use regular contraception
for best heath.