Janet Montgomery has revealed her husband Joe Fox left her just 10 days after she gave birth to their second child.The New Amsterdam star, 40, and Joe welcomed their son Milo in December last year, six years after their daughter Sunday Juno was born. Taking to Instagram on Tuesday, Janet confessed in a new Instagram post, writing: 'Last year, my life changed in a way I never could have imagined. 'Just ten days after welcoming my beautiful son into the world, I found myself navigating the heartbreak of becoming a single mother to two children. 'There were moments I wasn't sure how I would make it through the next hour, let alone the next day. 'Grief, exhaustion, fear, uncertainty, and the overwhelming responsibility of showing up for two little people who needed me no matter what. What I didn't expect was how held I would feel by this community. Janet Montgomery has revealed her husband Joe Fox left her just 10 days after she gave birth to their second child The New Amsterdam star, 40, welcomed their son Milo in December last year, six years after their daughter Sunday Juno was born Taking to Instagram on Tuesday, Janet made the confession in a new Instagram post, writing: 'Last year, my life changed in a way I never could have imagined''Over the past ten months, so many of you have followed along as I shared the messy, beautiful, painful, joyful reality of rebuilding a life.'You celebrated Sunday's milestones, watched Milo grow, checked in on me during the darkest days, and reminded me that even through a screen, people can show extraordinary kindness.'Being vulnerable online can feel frightening, but your messages, comments, encouragement, and support have often arrived exactly when I needed them most. 'You have laughed with us, cried with us, rooted for us, and carried us in ways you probably don't even realise.'This chapter has tested me more than any other in my life, but it has also shown me the incredible strength that exists in community. 'Thank you for holding space for our story. Thank you for letting me share it. Thank you for helping me feel a little less alone.'From the bottom of my heart, thank you for being here. Love, Janet.'Janet did not share a reason for their split. Janet got her start on Skins before landing roles in films such as Black Swan, Our Idiot Brother, Amateur Night, and Nighthawks (pictured on New Amsterdam)The Daily Mail has contacted Janet's representatives and Joe for comment. The actress, who stars in ABC's The Rookie: North, began dating director and copywriter Joe in 2017.The pair welcomed their first child in March 2019 and tied the knot in December that year in Jamaica.In 2019, Janet shared her wedding news on social media with a heartfelt message.She wrote at the time: 'I made an honest man of my best friend and the love of my life.'This was one of the greatest days of my life. 'Thank you to everyone who helped make it perfect and intimate, but mostly thank you to Sunday for wearing this headband and leaving it on for at least a couple of photos.'Janet got her start on Skins before landing roles in films such as Black Swan, Our Idiot Brother, Amateur Night, and Nighthawks.She also led the TV series Human Target, Mad in Jersey, Salem, and New Amsterdam.Other TV credits include Entourage, Downton Abbey, and This Is Us.Most recently, she starred in 1923 and Scarpetta, and can be seen in the upcoming ABC spinoff of The Rookie.