The 25-year-old actress wore prosthetics in the show while playing the character of five-month-pregnant Tina McIntyre. In the soap, she gives birth to twin sons, reported Sun online.
"I love babies, but working with a newborn has changed my outlook. I'm now thinking I'm not ready yet - give me a few more years," Keegan said.
Keegan, who is dating actor Mark Wright, played a prank by sending pictures of her fake baby bump to family.