Context: The Panthers and Saints were tied at 7-7 going into the second quarter. Mark Ingram scored a touchdown with a Wil Lutz extra point, and the Saints led by seven. The Saintsd score again to lead by 14. At the end of the second Christian McCaffery scored a touchdown, and with the extra point by Graham Gano, Carolina was down by seven at the half. Alvin Kamara scored a touchdown (Lutz kick) in the third, again increasing New Orleans' lead to 14 points. In the fourth quarter New Orleans scored 3 and Carolina scored 7. The Saints were too much for Carolina and won 31-21. Carolina fell to 8-4.

Question: how many points did carolina fall behind by?

Answer:
8