The restaurant allegedly later offered the couple 5,000 yuan ($728) in compensation for the incident - a price he was willing to negotiate after the hospital visit, he told the newspaper.
The outlet in Shandong has been temporarily shut down following the find last week.
Photos and video of a dead rat found at a branch of Xiabu Xiabu - boiled, hairless with legs outstretched - sandwiched between a pair of chopsticks after being fished out of a Value-Added Tax of broth have since circulated on Chinese social media.
The woman's husband, named as Mr Ma, said restaurant staff had told him: "If you are anxious about the baby, then we'll give you 20,000 yuan to abort it", according to Shanghai-based Kankan News. The staff at the restaurant allegedly offered the couple 20,000 yuan, which is $3,000 USA dollars, for them to have an abortion if they were concerned for the child's health. Some users said that they would never eat there ever again.
Video shows chopsticks dipping into a thick red soup and retrieving the stiff, boiled body of a rat at a restaurant in China on September 6.
By Sept. 11, the company's share price hit the lowest level since October of previous year. "I can't believe this", another commented.
Another user asked: "If something happens to her baby, how are they going to compensate her?"
The restaurant initially put out a statement on Saturday saying that it had "ruled out" the possibility that a lack of hygiene had caused the rat to end up in the hotpot, but later deleted it.
An inspection was immediately undertaken at the restaurant but no trace of rats were found.
Hotpot is a common meal in China and across other parts of Asia.