Hello dear
I understand your concern
You had sex on 12th day of period and took
postinor 2 on same day.
It will highly effective in preventing
pregnancy, upto 95 % effective in preventing pregnancy.
So chance of pregnancy is around 0-5 %.
Discharge could be due to side effect of postinor 2 as it contain high
progesterone.
But it may cause earlier period, delayed period by 1-2 weeks and excessive bleeding can occur.
I would suggest to go for blood
HCG test 10 days after unprotected sex to confirm pregnancy.
Blood HCG test is more accurate test to confirm pregnancy as you have irregular period
Avoid
stress, take healthy diet, drink plenty of water, maintain proper pelvic hygiene and do regular exercise
Hope this may help you
Contact further if follow up needed
Best regards
Dr. Sagar