My 7month old has 2 grey hairs.. is somethin wrong?

No worries usually: This may be a random unexplained condition. There are some syndromes associated with this although rare. As long as your baby is een by your pediatrician for regular checkups, I would just do routine follow up care. Any delay in milestones, etc needs to be addresses or if the grey hair numbers increase substantially, further assessmeny may be needed.