The actress, 38, and her 30-year-old husband Jack McManus revealed last month that they are expecting their first child together, and she took to Twitter this week to update her fans.
She wrote: "Morning folks! How are we all today? I'm going to meet my friend for brunch/lunch – I fancy a veggie fry up! #goneoffmeat #pregnant"
Martine has always expressed her wish to start a family, but previously admitted that she'd almost resigned herself to the fact that it may never happen for her.
Speaking to a British magazine last month, the former EastEnders star said: "We'd always said that if we were fortunate to be blessed with a child, that would be wonderful, but we are very aware that it's not a given.
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"As a woman in her late 30s who's experienced health problems, I thought I might have to accept that it wasn't a path my life was going to take, but it would have been a great sadness in our lives if that had been the case."
The health issues that Martine was speaking of were so severe she was unable to work for almost four years, resulting in her being declared bankrupt last year.
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She said: "It was a terrible time in our lives but you discover who your friends are and we found amazing support from people who really came through for us.
"It's like finally the tides have turned. Great things are starting to happen on the work front, but more than anything, expecting our baby boy has given us clarity about what matters."