She expanded on how much the effects of pregnancy have affected her.

\"As I was working out today, I realized that for the past 11(ish) months, my body has not belonged to me,\" she wrote. \"It was a perfect home for Jacob. And even now it belongs to him every time he drinks his milk.\"

Underwood resolve to embrace the changes. \"As I prepare for red carpets and for life on tour, right now I make a promise to myself to start appreciating what my body CAN do and stop focusing on what it can’t,\" she wrote.

\"I promise to stop analyzing every angle and every curve and every pound and every meal,\" she continued. \"I’m going to keep staying the path because it is a journey and as long as I’m always working towards my goals, one day I’ll reach them.\"

\"I’m going to take it day by day, smile at the girl in the mirror, and work out because I love this body and all it has done and will continue to do!\" she added.

Underwood shared a photo of her husband holding her newborn in January and wrote about how ecstatic their family was to welcome the baby.

\"Our hearts are full, our eyes are tired and our lives are forever changed,\" she wrote. \"Life is good.\"

View this post on Instagram

Jacob Bryan Fisher entered the world in the wee hours of the morning on Monday...his mom, dad and big brother couldn’t be happier for God to trust them with taking care of this little miracle! Our hearts are full, our eyes are tired and our lives are forever changed. Life is good...

A post shared by Carrie Underwood (@carrieunderwood) on Jan 23, 2019 at 11:52am PST

The seven-time Grammy-winning singer's upcoming \"Cry Pretty Tour 360\" kicks off in May and runs until October 2019.

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