Chrissy Teigen, 35, has recently shared a health update, revealing that she is ready to undergo endometriosis surgery on what would have been the due date of her son Jack, whom she lost after 20 weeks of pregnancy back in September, according to PEOPLE.

On September 30, she revealed on Instagram that she and her husband John Legend suffered a pregnancy loss.

Just recently, Teigen tweeted that she is feeling “a bit off” since “my little Jack would have been born this week,” adding, “I truly feel kicks in my belly, but it’s not phantom. I have surgery for endometriosis tomorrow…but the period feeling this month is exactly like baby kicks. sigh.”

Endometriosis is an often painful disorder in which tissue similar to the tissue that normally lines the inside of your uterus — the endometrium — grows outside your uterus,” according to Mayo Clinic. Endometriosis most commonly involves your ovaries, fallopian tubes and the tissue lining your pelvis. Rarely, endometrial tissue may spread beyond pelvic organs.

In a subsequent post, Teigen wrote, “Look at this. I’ll pretend it’s him saying hi – it never stops.” She asked her fans for insight into endometriosis surgery recovery, questioning, “What is the recovery-difficulty level? like can I make soup after?”

In November, she said she was in a “bit of a grief depression hole,” due to the loss of her son.

Also in November, Teigen and Legend told PEOPLE they have been able to find a “little bit of sunshine” as they continued to grieve the loss of their son.

At the time, she said, “You learn how to cope with it. I am very proud to say that there’s multiple different therapies I’m using to hopefully become the same person that I was, and I’m okay with that. I’m okay with allowing myself to have bad days and good days.”

In December, Teigen spoke about her body on Instagram, revealing that she will never be pregnant again.

She wrote at the time, “This is me and my body, just yesterday. Even though I’m no longer pregnant, every glance in the mirror reminds me of what could have been. And I have no idea why i still have this bump, honestly. It’s frustrating.” The article was originally published in PEOPLE.