Jessie James Decker: Why My Second Pregnancy Has Been ‘Completely Different’

04/13/2015 at 12:15 PM ET

Pregnancy has been as effortless as it looks for Jessie James Decker.

Despite it being her second child — the country singer and her husband, New York Jets wide receiver Eric Decker, are already parents to 12-month-old daughter Vivianne Rose — everything has been “completely different” for the mom-to-be.

“It could not be more opposite than it was with Vivianne,” James Decker, 27, told PEOPLE at the Paul Blart: Mall Cop 2 premiere in New York City on Saturday. “The first time I threw up every day, I was really sick, really exhausted.”

She adds, “This one, I have more energy and I don’t feel as sick, no cravings. The only way I really know I’m pregnant is I feel this bump growing and a baby moving around.”

Jessie James Decker Paul Blart Mall Cop premiere
Mike Coppola/Getty

Could it mean that she’s expecting a baby boy in September? Only time will tell: The couple know the sex, but are keeping it a secret for now.

“I’m not saying it yet, but we’re very excited,” James Decker, who recently launched her new swimsuit line as her single “Clint Eastwood” climbs the charts, teases.

— Jessica Fecteau

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Amanda on

I love her!!!! Hoping it’s a boy next for these two….. will be just as beautiful as Vivi I’m sure.