The 21-year-old reality TV star and Marroquin, 20, announced in March they were expecting a baby.
The new baby is Marroquin's first, as Lowry already has a three-year-old son named Isaac from a previous relationship. Her ex-boyfriend and the father of Isaac, Jo Rivera, appeared with Lowry onTeen Mom 2 and her initial stint on 16 & Pregnant.
Lowry and Marroquin, a U.S. airman, got engaged in September 2012 and reportedly wed one year later on September 21 of this year.
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