After doing intercourse.she took a pill unwanted 72 within 48 hrs,and then 1 period has happened .is there any chance of pregnancy?

Yes.. there always is... that pill isn't 100% effective. Do not count on it working every time.


Is there any legitimate reason you both didn't use birth control... other than it wasn't convenient at the moment?


However if that was a one time event...and enough time has passed she had a full period since then....you can consider that chance zero.