Freedman, whose father is Melbourne Cup-winning trainer Lee Freedman, confessed that the racing season was rather difficult.
"Been hard at Spring Carnival," she joked.
"I was on the sodas just saying I was working. I had a couple of people going, 'Oh, you wore pants and tops and nothing tight?' It's interesting people notice that."
The personality has a hunch that it will be a girl - in which case she'd love to name her Charlotte - Lotte for short.
But the pregnant radio host won't know the gender until the birth.
"It's definitely going to be an emotional rollercoaster. Charlie is over-the-moon, he's so ready to be a dad... We're very lucky and very fortunate that it happened so quickly."
Freedman also shared a touching message on Instagram.
"We are thrilled that we’ll be meeting our own little Rundle Bundle in late May next year," she wrote alongside two photos - one with her husband and one of her bump with her dog Utah.
"Charlie and I are so excited and can’t wait to experience all the love, joy and challenges of parenthood."
"This snap was taken on the weekend with the slightest hint of a bump!"
"We’ll also be sharing all of this with Utah, of course! Our fur baby is amazing with children, and I have a feeling he already knows what’s up - my now very regular afternoon naps have been shared with him resting his head on my tummy."
The couple married earlier this year after they began dating in 2015.