Justene Alpert is opening up about a heartbreaking loss.

While sharing she terminated a pregnancy back in December, the 36-year-old gave insight into what led to her and husband Mason Trueblood’s decision, explaining that their baby had been diagnosed with a “rare genetic disease.”  

“To the woman who is experiencing this or has experienced this before,” Alpert wrote in a June 25 Instagram post, “I'm mad for us. No one prepares you for this. No one talks about this. No one briefs you on this when you are trying for a family.”

She went on to detail how the disease was impacting the fetus. “He wasn't going to make it to full term,” she shared. “It's hard to swallow this news because I was looking at his little heart beating on the screen. He had the most beautiful profile. He had his dad's nose. I was ready for him. But then they pointed out the fluid, the organs, etc.”

After her doctors recommended termination due to the “high risks” associated with pregnancy at her age, the 9-1-1 actress said she and her husband Mason Trueblood “had to say ‘goodbye' to our son” on Dec. 29.

“We didn't want to have to make this decision,” she continued. “No mom or dad should ever have to be put in this place. The shame and guilt is unfair. Having to do this is something that is rarely spoken of and seems to not have the same kind of empathy as other situations. It's the worst pain and many suffer silently out of fear of being judged or simply misunderstood.”

In sharing her story, Alpert said she hopes to help other women who have gone through similar experiences. She also thanked her friends and family for supporting her after the termination, adding photos and slides of her loved ones reacting to her initial pregnancy news.

But above all, the Bosch alum expressed gratitude for her and Trueblood’s unborn son, whom they named Mads Mason Trueblood.

“You are the one who gave me the backbone when I was doubting if I was ready to be a mom or not,” she wrote in her Instagram post. “Boy oh boy, kiddo, I was ready for you. I was ready to bling out a jersey with your number on it, to teach you how to play rough when your dad would walk away after his safety speech, to have a tiny protector, to give so many hugs and kisses to. I was ready to be yours.”