Carter Walton’s desperate dream of becoming a father could be heading toward its most devastating twist yet on The Bold and the Beautiful. Just when Carter believes he has found a way to build a family with Daphne Rose, one shocking medical discovery could destroy everything. What if Li Finnegan uncovers fertility results suggesting Carter cannot father a child naturally? Suddenly, Steffy Forrester’s pregnancy would become the center of an explosive paternity investigation, and the baby Carter has already claimed could turn out to belong to John “Finn” Finnegan.

The nightmare begins with Steffy’s frightening collapse. After enduring relentless questions from Ridge Forrester and Taylor Hayes about her supposed decision to become Carter and Daphne’s surrogate, Steffy reaches her breaking point. Her emotional distress has become impossible to ignore, and her sudden medical emergency could finally force everyone to examine the pregnancy more carefully. Instead of accepting the surrogacy explanation, Li could demand answers about the conception timeline, the alleged fertility procedure, and the identity of the baby’s biological father.
Li has already played an important role in Carter and Daphne’s fertility struggles. Daphne’s reproductive difficulties created the heartbreak that pushed the couple toward alternative ways of becoming parents. However, Carter’s own fertility has never been conclusively established through a confirmed on-screen diagnosis. That missing information could become the foundation of a spectacular new twist. What if Carter secretly undergoes testing after realizing that the pregnancy timeline does not make sense?
Imagine Carter receiving a laboratory report showing no sperm in his sample. The devastating finding would raise serious questions about his ability to father a child naturally. Although such a result would require further medical investigation and would not automatically prove permanent infertility, Carter could immediately fear the worst. His confidence would collapse as he confronts the possibility that the baby he believes is his might never have been biologically connected to him.
The discovery would become even more explosive if Li learned about the report. As Finn’s mother and a physician familiar with Daphne’s medical history, Li would understand why the finding deserves further investigation. She could begin comparing Carter’s results with Steffy’s pregnancy records, searching for inconsistencies that nobody wanted to acknowledge. The alleged embryo-transfer date, early heartbeat, and estimated gestational age could all become crucial clues in determining whether the surrogacy story is medically possible.
For Steffy, the danger would be enormous. She has already struggled under the weight of her deception, terrified that Finn will discover what happened during her drunken night with Carter. Yet another possibility remains: Steffy and Carter might have misunderstood what actually occurred between them. If they were too intoxicated to remember the night clearly, their assumption about conception could be completely wrong. A pregnancy dating back to an earlier encounter with Finn would change everything.
Finn would face an equally painful revelation. He has tried to support his wife while accepting a surrogacy arrangement that he never expected. Learning that Carter’s fertility results cast doubt on the entire explanation could leave him questioning every conversation Steffy has had with him. But the ultimate shock would arrive if a properly conducted paternity test established that Finn, not Carter, fathered the baby. The child everyone expected Steffy to surrender would actually belong to her marriage.
Daphne would suffer perhaps the cruelest betrayal. After confronting the possibility that she could never experience pregnancy herself, she embraced the hope of raising a child with Carter. Discovering that her husband concealed the truth about Steffy would be devastating enough. Learning that the promised baby was never biologically Carter’s could shatter her trust completely. She would have to confront the possibility that her dream family had been built around a lie.
Ridge would undoubtedly demand accountability. Carter has already damaged his relationship with the Forrester family through previous betrayals, and another deception involving Ridge’s daughter would reopen those wounds. Taylor, meanwhile, could realize that Steffy’s panic was never simply about surrendering a baby. Her daughter may have been terrified that the entire family would discover a secret capable of destroying two marriages.
The most dramatic outcome would not be Carter’s infertility diagnosis alone. It would be the chain reaction that follows: Li discovers the troubling test results, Steffy’s pregnancy timeline comes under scrutiny, Finn demands the truth, and Daphne learns that her husband has been hiding something far more serious than a complicated surrogacy arrangement.
For now, Carter’s infertility and the proposed DNA revelation remain speculative twists rather than confirmed developments. But the possibility creates one unforgettable question for The Bold and the Beautiful: If Carter cannot be established as the baby’s father, will Li’s investigation finally prove that Steffy has been carrying Finn’s child all along — and will Daphne ever forgive the man who promised her a family?