What Is The Dosage Of Marvelon After Unprotected Sex?

I am taking 2 tablets marevlon after less than one hour after non protective intercourse to figure out as emergency contraceptive pills that are not available here . can i take another 2 tablets after 12 hours of the first dose?
and what about the other 4 tablets can i divided into 2 doses or should take all together?
pease answer me i am worried????

The one i have bought is Marvelon. 1 tablet is 0,150 mg desogestrel and 0,030 mg ethinylestradiol. How should i take this..?