credit score dropped prior to closing

[Joe Belanger]

I was pre approved for house and bank just accepted my offer last week, I received notification today that credit score dropped 28 points ONLY thing changed was alert saying "credit usage significantly increased 45%" it takes me to 608 score which is below 620 needed with lender for FHA. Spoke to loan officer and said yes it could affect me closing on home. My inspection is tomorrow so I have time I paid off card today to $0 balance. Do you think I will be OK come closing?