The Saints will be holding their breath on this one.

Quarterback Drew Brees left Sunday’s 27-9 loss to the Rams during the first quarter after injuring the thumb on his his right hand, which was hit by Rams lineman Aaron Donald as Brees followed through on a pass attempt.

Brees didn’t return, and, according to ESPN the 40-year-old is “concerned and that it could be significant. He will see a specialist this week.

Former Jets quarterback Teddy Bridgewater replaced Brees under center.

Not long after Brees got hurt, Donald ended up going off to the locker room with a back issue. He also was deemed questionable to return.