"I'm 13 weeks," Jade, 32, told Us. "We were trying for 10 months and got pregnant in November."
Jade alluded to the fact it was a long wait to get pregnant for the second time when she first announced the couple's baby news, writing on Instagram she and Tanner had been "dreaming" of the little one "for awhile now."
Jade also revealed at the time the baby is due in August 2019 and he or she is "already loved beyond imaginable."
Tanner, 31, gushed that same day how their daughter, Emerson Avery, is "excited to be a big sister."
When asked about Emerson's personality, Jade told the magazine, "[She] is super cuddly and affectionate."
Jade added, "I think that is a big characteristic of mine... Her favorite thing to do is to take toilet paper, put it in the toilet, get it soaked, take it out and leave chunks everywhere. She loves to explore. They are like giant spit wads!"