Jamie-Lynn Sigler Reveals Secret, 15-Year Battle With MS

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Jamie-Lynn Sigler is opening up about her long time battle with multiple sclerosis (MS).

The 34-year-old actress reveals her diagnosis in an interview with People, calling her illness "still hard to accept" even after 15 years. She says she hid her illness while starring on The Sopranos, but that her symptoms have gotten worse within the past decade.

"I can't walk for a long period of time without resting," she says. "I cannot run. No superhero roles for me. Stairs? I can do them but they're not the easiest. When I walk, I have to think about every single step, which is annoying and frustrating."

WATCH: Jamie-Lynn Sigler Marries MLB Pro Cutter Dykstra in Palm Springs

However, she says her disease is more manageable now and that her symptoms have been stable for the past six months, thanks to MS drugs including injections and infusions and the twice-daily pill Tecfidera.

And of course, she's keeping a positive attitude.

"It takes a fighting attitude to deal with all this," Sigler stresses. "This disease can absolutely take over your life if you let it."

Sigler certainly has plenty to fight for. This past Saturday, she married her husband, pro baseball player Cutter Dykstra, in Palm Springs, California. The couple has been dating since 2012 and are parents to their adorable 2-year-old son, Beau Kyle.

"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," the Entourage star says. "It's part of me, but it's not who I am."

"I don't know what's to come. But I'm excited for the first time in a long time," she adds. "I've got my brain and my heart and I've prepared myself for everything that could happen. But I've got an amazing husband, the best son, and I hope that we can make more babies and just keep having fun. I'm the luckiest girl in the world."

WATCH: Shemar Moore Talks Mom's Battle With MS

Watch the video below to see Sigler's gorgeous Oscar de la Renta wedding dress during her picture-perfect wedding ceremony last week.