She's back!

Jamie-Lynn Sigler has returned to work for the first time since bravely revealing she's been battling multiple sclerosis the past 15 years to film a new guest-star spot on the Freeform comedy Baby Daddy.

"It's been overwhelming in a good way. Everything that I feared about [disclosing my illness to the public] has not happened. The complete opposite happened. I've been working consistently since, which is crazy," the 34-year-old actress said in a new interview.

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Jamie-Lynn on Jan. 9.

"[My body is] sort of like a gas tank," she continued. "You have your amount of energy for the day, and you just sort of allocate and use it where you're going to need it."

RELATED: Jamie-Lynn Sigler Says Her The Sopranos Costar James Gandolfini was "Protective" of Her After Revealing Multiple Sclerosis Diagnosis

Jamie-Lynn — who married her longtime love, Cutter Dykstra, in January — previously debated revealing her diagnosis because she feared people would underestimate her employment capabilities. But, the actress confessed her two-year-old son, Beau, ultimately helped her overcome that fear.

"He's coming towards an age where he'll be aware," Jamie-Lynn said. "We'll have to have a conversation, and I don't want him to think that I had to hold anything back."

Click through the gallery below to see the cast of The Sopranos then and now!