Rep. Alexandria Ocasio-Cortez (D-N.Y.) is feeling more than just the Bern in this presidential race.

The freshman officially endorsed Sen. Bernie Sanders (I-Vt.) in the 2020 race last week along with two other members of her progressive squad: Reps. Ilhan Omar (D-Minn.) and Rashida Tlaib (D-Mich.). But even though Ocasio-Cortez's endorsement seemed like a given, she confirmed Sunday that Sanders wasn't the only candidate she was considering.

Ocasio-Cortez worked as an organizer on Sanders' 2016 campaign, and told CBS News at a Sanders 2020 rally this weekend that she offered her endorsement this time around while Sanders was in the hospital after a heart attack. "I think it was a gut check for me," Ocasio-Cortez said of Sanders' health scare, adding that it reminded her that both she and Sanders "cannot do this by ourselves." Ocasio-Cortez then confirmed she'd also met with Sen. Elizabeth Warren (D-Mass.) before giving her endorsement to Sanders, only saying Warren was a "fabulous candidate." "Frankly, Senator Sanders, Senator Warren, and myself are all on the same team in the party," she added.

Sen. @BernieSanders is getting a major boost to his presidential campaign after his heart attack nearly three weeks ago. Congresswoman @AOC endorsed him in front of more than 25,000 people at a weekend rally in New York City. @NikolenDC sat down with Sanders and Ocasio-Cortez. pic.twitter.com/Zh5JMdxTon — CBS This Morning (@CBSThisMorning) October 21, 2019

Despite this endorsement, Ocasio-Cortez isn't expecting to join Sanders on the ticket. "I think I'm too young for that," Ocasio-Cortez said of a vice presidential run, though Sanders made it clear he'd like to see Ocasio-Cortez on his staff. Kathryn Krawczyk