The model had multiple blood transfusions prior to her pregnancy loss.
On Monday, the 34-year-old model and cookbook author took to social media to share a touching tribute that seven of her friends made in honor of Jack.
"I have the absolute best friends in the world. A small circle but if it were 50 times larger, I still wouldn’t feel the love I do every day," Teigen captioned the clip. "Seven bags donated for the seven used for Jack. Love you so much, @kimmiekyees."
Teigen shared on Sept. 30 that she and Legend had lost their third child after suffering a series of pregnancy complications that required her to have multiple blood transfusions.
Over the weekend, Teigen posted the tattoo of Jack's name she had inked on her wrist near the names of the couple's other children, Luna, 4, and Miles, 2.
The TV personality also previously penned a moving essay about her pregnancy loss in late October. She shared that doctors had diagnosed her with partial placenta abruption, which is when the placenta separates from the wall of the uterus before birth.
"After a couple nights at the hospital, my doctor told me exactly what I knew was coming -- it was time to say goodbye. [Jack] just wouldn’t survive this, and if it went on any longer, I might not either," she recalled. "We had tried bags and bags of blood transfusions, every single one going right through me like we hadn’t done anything at all."