Welcome to HCM.
Your LMP is 20 th August and you have 2 episodes of unprotected sex. You also take POSTINOR emergency pill.
So chances of pregnancy
is negligible and this type of brownish discharge or spotting is due to side effect of POSTINOR tab as breakthrough bleeding
. It is stopped spontaneously.Your period may be earlier or delayed from due date.
If there is excessive bleeding,then you have to consult with your gynecologist and need some clinical examination.
If period is delayed for more than 7 days,then do a home pregnancy test again to rule out any pregnancy.Otherwise,you take it as normal thing.
Don't worried much about this.Wait for the coming period.
Be well and tc.