Teigen posted photos of her baby bump on Instagram, opening up about the journey to pregnancy

She announced the news on social media Wednesday, almost two years after the couple experienced pregnancy loss.

The former model, who has been public about fertility struggles, lost a son in 2020 after issues with bleeding

Every appointment I’ve said to myself, 'ok if it’s healthy today I’ll announce' but then I breathe a sigh of relief to hear a heartbeat

In October 2020, Teigen said that she delivered her son Jack at 20 weeks with her husband and mother at her side

At the time, she had been on bed rest and experienced heavy bleeding that eventually led to blood transfusions

It's unclear how far along Teigen, 36, is in her pregnancy or whether she knows the sex of her baby

In February, she shared that she had resumed in vitro fertilization. Teigen and Legend are also parents to daughter Luna, 6, and son Miles, 4