Hello and welcome to HCM
of the fertilized ovum takes place atleast 24 hours after the fetilization.
The bleeding that you have experienced may be due to mid-cycle bleed or early manstrual cycles.
Mid-cycle bleed occurs at the time of ovulation.
Since you have taken morning after pill, you have prevented a pregnancy
but you should get the pregnency test done to rule out the pregnancy.
And if it is an early menstrual cycle then there is no chance of pregnancy.
Thanks and take care
Dr Shailja P Wahal