"We're super excited!" Maynard tells Us.
This will be the second child for the season eight Bachelorette, 28, who is mom to 9-year-old daughter Ricki. Maynard raised Ricki on her own after her late fiancé, high school sweetheart Ricky Hendrick, died in a tragic plane crash back in 2004.
Maynard first found fame — and fleeting love — on Brad Womack's season of The Bachelor in 2011.
The West Virginia native accepted Womack's proposal at the end of season 15 of ABC's smash franchise, only to call it quits in 2011. A year later, she starred on her very own season of The Bachelorette, where she ultimately got engaged to contestant Jef Holm. The two split in late 2012.
In January 2014, Maynard exclusively broke the news to Us that she was engaged to Johnson. "He proposed to me at home and gave both Ricki and me rings," Maynard gushed to Us at the time. "It was so sweet." (The blonde reality star also teased a "good year" ahead on her Instagram as she welcomed 2014.)
The couple's baby news comes nearly six months after they tied the knot at Johnson's family farm in South Carolina last June. Little Ricki played a huge role in the ceremony as the maid of honor.
"It was romantic and beautiful," an eyewitness told Us of the ceremony. "When Tyler saw Emily, he was completely in awe."