Of course, Bain's story went viral after the Duke game -- his family home and church in the Bahamas were destroyed in Hurricane Dorian -- and people raced to his GoFundMe to help them rebuild.

The good news ... Bain tells TMZ Sports his family home is covered by insurance, so the GoFundMe cash (currently around $150k) will be used to help the scores of people who need help the most.

"That money is to help other families within the church and on the school," Bain says ... "It's going to help a whole lot of families."

In fact, Bain had this special thank you message to everyone who contributed ...

"To those people who are watching right now or you’ll see this later, just thank you so much! You have no idea how [many] folks you’re helping. How [many] families and lives you’re gonna change ... because there’s still folks back home without constant water, without shoes, without clothes that this money is going to go towards."

"You’re making an impact inside a little kid’s life, you’re changing somebody’s life for the better. Shows there’s still great people inside this world, still humane people that are still thinking about others so I just wanna say THANK YOU! My whole country thanks those who are still contributing!"

As for the basketball team, Bain says they've become rock stars on campus since the upset -- but they're not looking to slow down any time soon!

"The whole campus has been loving on us! But, the season isn't over!"

SFA is 6-1 and taking on Arlington Baptist University on Monday night -- and after beating Duke, they're expected to win big!