Thanks for the query to H.C.M. Forum.
In all 18 pills ( morning after ) ,usually these tablets are combination of levonorgesterel+ethinylestradiol
You took these tablets in the month of June 2012 i.e almost 17 months back.
Mind one thing that there is no any side effect of these tablets at present, so don't bother.
Now question is you are not getting pregnancy?
Possibilities includes .
1 Poly Cystic Ovarian Disease
( pcod), diagnosis can be confirmed by ultrasound
of both ovaries.
imbalance , diagnosis can be confirmed by estimation of estrogen, androgen, FSH/LH ratio.
3 Follicle did not mature , diagnosis can be confirmed by study of ovarian follicles.
In my opinion consult an infertility
specialist and get his opinion.
Good luck For you Dr. HET