1 week into flowering and dying leaves! Help!

Thread starter #1
Over this past week Which happens to be week one of budding, my girl has developed some droopy leaves and leaves that look as though they're dying! Turning yellow and some even fell off! Does anyone know why or at least have any suggestions?
 

conradino23

Grow Journal of the Year: 2017 - Grow Journal of the Month: Sept 2017
Nitrogen deficiency.