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When Molly Sims was pregnant with her first child -- son Brooks, now 2 -- she felt, for the most part, pretty great.

But now that she's expecting baby No. 2, it's a completely different story. "Nothing is the same," she told Wonderwall at Elyse Walker's 10-year anniversary Pink Party, benefitting the Women's Cancer Program at the Cedars-Sinai Samuel Oschin Comprehensive Cancer Institute, on Oct. 18.

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"I was completely sick from before I found out I was pregnant till about three weeks ago -- morning till night," she added. "It was like I had 17 glasses of wine and wanted to throw up on you. That's probably why you haven't seen me [out at events that] much."

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Sims, 41, hasn't had what she would exactly call cravings this time around, unless crackers count. "I'm like a walking bottle of ginger ale!" she half-joked, pausing to catch her breath ("Sorry, I have heartburn," she explained). "[But] I do feel like I've turned the corner."

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Next up for the stylish mama and her producer husband Scott Stuber, 45? Figuring out if Brooks is going to have a little brother -- or sister. "We don't know [the gender] yet," she said, "but we are going to try to find out!"