As a mom to a toddler, Jamie-Lynn Sigler already knows that motherhood can be challenging.
Diagnosed with multiple sclerosis (MS) at age 20, Sigler says her symptoms, which include a weaker right side and difficulty walking for long periods of time, don’t hinder her from taking care of her 2-year-old son, Beau Kyle.
“He doesn’t know any different,” she tells PEOPLE in this week’s issue. “I’m still on the floor with him playing. It may take me a few more seconds to get up than other moms, but he doesn’t look at me any differently, and that makes a huge difference for me too.”
“I was so relieved when I was pregnant because I was so afraid I was going to have trouble because of all the years of [treatment],” says the actress, who went off her medication before and during her pregnancy.
She adds, “You never know how things are going to affect you.”
In fact, Sigler went into full remission during her pregnancy. “I can’t walk my hill with my dog today but when I was nine months pregnant, easy breezy,” she says. “It’s just something beautiful. Everything goes quiet.”
As for expanding her family with her husband, pro baseball player Cutter Dykstra, 26, Sigler says she hopes to have that chance — but she understands if it’s not in the cards.
“I would love to have another child. I would love to be working and feel inspired and strong, but if life takes another path, I’ll be okay,” she tells PEOPLE.
“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.”
“I’m alone with my son a lot and I can do it. It’s hard, maybe harder, but I think it’s hard for anyone,” she says. “And it’s not always pretty and it’s not always graceful, but I’m doing it.”
For more of Sigler’s revealing interview, including exclusive photographs from her wedding album, pick up this week’s issue of PEOPLE on newsstands now.
— Julie Jordan