Hello
Thanks for writing to us with your health concern.
Yes, after taking 10 of those pills, you would have withdrawal bleed.
The amount of bleeding you experienced would come under the category of normal.
It should subside in a few days.
Also you should know that the intake of these pills would alter your normal expected periods.
They could be preponed or postponed by a week, or sometimes more, upto ten days.
So it is not for sure that you would have your period on the 18th, even if you are not pregnant !
This uncertainty is why these pills are never a good idea when taken as an emergency
contraceptive.
The only way to be sure is to take a
pregnancy test 4 weeks after the episode of unprotected sex.
Yes, you would not know till then.
All the best.
Take care.