Gilbert, 47, banged her head while competing Monday night. She was briefly hospitalized and missed Tuesday's results show.
Going to attempt a gentle rehearsal in a bit," she said via Twitter Wednesday.
She later reported she was "very happy" to be back to work with her professional dance partner Maksim Chmerkovskiy.
"Now back home to bed," she tweeted.
Chmerkovskiy told People.com he is "pretty sure" Gilbert will compete again on the show.
"I think we are coming back," Chmerkovskiy said. "I'm pretty sure. It's not up to me, it's up to her, [but] I haven't heard talks of not coming back. Although, if she wakes up tomorrow and continues to have a headache, I won't let her in the studio."
Gilbert is best known for her work on the 19th century-set drama series "Little House on the Prairie."