Jamie-Lynn Sigler Says Motherhood Pushed Her to Publicly Reveal Her MS Diagnosis

Jamie-Lynn Sigler and her pro baseball player husband Cutter Dykstra might have a future MLB player on their hands!

The Sopranos alum, who wed Dykstra in January, dishes on her wedding in a sneak peek at Wednesday’s episode of Harry — and also opens up about her 15-year battle with multiple sclerosis (MS).

“We’ve been together five years and have a 3-year-old, but to have him be a part of our wedding — my best friend, Lance Bass, married us, and my son got to walk down the aisle. He wore — he’s obsessed with baseball — and he wore a little home plate around his neck that said, ‘Here comes my mommy,’ ” Sigler tells host Harry Connick Jr. of her 3-year-old son Beau’s involvement in their wedding day.

Sigler, who was diagnosed with MS at the age of 20 and publicly revealed her battle in January of this year, also credits motherhood to the reason why she decided to share her brave story.

“It was very difficult to accept. And to be quite honest, it took me all that time to really be able to come forward because I finally have accepted it as part of my life,” says Sigler, 35, who lived with MS for 15 years before publicly disclosing her diagnosis, says in the clip.

“The message I want to put out there is that it doesn’t define me, it’s part of me, but it’s not who I am. And so I’ve been really through the ups and downs with this journey of my life with relapsing MS, but figuring out how to still live as full life as possible,” she says, and adds, “I think when you become a mother, you’re much more reflective on things and I was thinking about my son and anticipating as he got older, I would never ask him to hold this secret for me. I want to be an example of strength and perseverance and pushing past my circumstances. And so I finally got ready to take my power back and be public with it.”

She previously told PEOPLE, “I wasn’t ready until now … You’d think that after all these years, somebody would be settled with something like this, but it’s still hard to accept.”

“I’m at a point in my life with my son, with my new marriage, it’s a new me. I don’t want to hold a secret where it feels like I have something to be ashamed of or have something to hide,” she told PEOPLE. “It’s part of me, but it’s not who I am.”