Kristin Cavallari left in tears after watching 12-year-old son Camden take brutal hit in his first football game

Kristin Cavallari has admitted she was left in tears after watching her 12-year-old son Camden take a brutal hit during his first football game.

Cavallari is the ex-wife of former NFL quarterback Jay Cutler, who played in the NFL for 12 seasons.

Cutler had spells at the Denver Broncos, Chicago Bears and Miami Dolphins, earning a spot in the Pro Bowl in 2008.

Cavallari and Cutler have three children together but she revealed on Tuesday how emotional she found watching 12-year-old Camden on the field.

Back in August, Cavallari celebrated her son's 12th birthday and his first-ever game as starting quarterback for his youth football team by posting a photo of herself hugging Cam wearing his football uniform. 

Speaking on her 'Let's Be Honest' podcast, Cavallari admitted she cried the night before that game because of the prospect of her son playing against opponents who are '6-foot-4 and up'. 

She went on to reveal that Camden took some 'really bad hits' on the field that left her in tears as she watched.

She said: 'He got hit, and he went flying and he fell really hard.

'I just knew, as a mom, how scared he was after that first hit. And that's what f***ed me up more. Oh my god, I really thought I'd worked through all this.

'Thinking of him being scared out there just wrecks me. It just wrecks me.

'More so than the physical aspect, obviously, physically I don't want him to get hurt, and then he got hit a couple other times. And that was honestly one of the hardest things I've had to sit through. It's so hard seeing your baby get hit.

'Your kids are literally little pieces of your heart, quite literally, out there in the world getting s*** thrown at them, getting physically hit, all these things. And all we want to do as moms is protect our babies.

'The flip side of it is when he's playing really well and he gets a touchdown and everything, it's just the best feeling in the world and you're so happy for him.'