Pregnancy Pregnancy was the carrying of one or more offspring inside a womb , characteristically by the female s of a species . Time Lord . According to one account , all pregnancies on Gallifrey ended in miscarriage when the Pythia cursed her world with sterility . Even Rassilon ' s wife was said to have endured this curse . ( PROSE : " " ) This required Time Lords to adopt the asexual " Loom ing " process of artificial genetic reproduction . This resulted in the elimination of direct , lineal familial relations , rendering all relationships collateral . In other words , Time Lords of the same family could at most be only " cousins " of each other . However , the Pythia ' s curse did not seem to extend to off - worlders , as Leela was pregnant with Andred ' s baby . ( PROSE : " Lungbarrow " ) Most other accounts did not support the idea of the Pythia ' s curse , showing that Time Lords had at least approximately human sexual relations . Susan , for instance , had an apparently Earth - normal pregnancy to produce her son ; the extreme xenophobia present on Earth in the 2160s and 2170s would have made her a social outcast had her pregnancy been viewed as abnormal . ( AUDIO : " An Earthly Child " ) once reminisced with the Tenth Doctor about " [ his ] father ' s estate " . ( TV : " The End of Time " ) As well as this , the Eighth Doctor made mention of a father , ( TV : " Doctor Who " ) as did the Tenth Doctor , ( TV : " The Fires of Pompeii " ) the Tenth Doctor mentioned a brother ( TV : " Smith and Jones " ) and the Doctor himself being a father , ( TV : " Fear Her " , " The Doctor ' s Daughter " ) while Clara Oswald mentioned the Doctor ' s missing children and grandchildren ( TV : " Death in Heaven " ) and mentioned her daughter ( TV : " The Witch ' s Familiar " ) — not to mention the fact that Susan and Alex Campbell were unambiguously identified by the Eighth Doctor as his biological grand - daughter and great - grandson . ( AUDIO : " An Earthly Child " , " Relative Dimensions " ) One account showed numerous groups of families with Gallifreyan children on the planet Gallifrey during the Last Great Time War . The Doctor knew by his tenth incarnation that on the last day of the Time War , 2 . 47 billion children were on the planet . ( TV : " The Day of the Doctor " ) The Eleventh Doctor claimed in one account that he slept in a small cot . ( TV : " A Good Man Goes to War " ) Another account showed the First Doctor as a child . ( TV : " Listen " ) Human . Under normal circumstances , pregnancies amongst the human and humanoid were always endured by the female of the species . The Doctor ' s companions . Only a few of the Doctor ' s companion s and close allies were known to be pregnant . Most were pregnant long after they stopped travelling in the TARDIS . Dodo Chaplet , for instance , was pregnant with James Stevens ' baby when she was murdered by Francis Cleary . ( PROSE : " Who Killed Kennedy " ) In 2600 , Bernice Summerfield became pregnant with Adrian Wall ' s baby when Avril Fenman temporarily took over her body . ( PROSE : " The Squire ' s Crystal " , " The Infernal Nexus " , " The Glass Prison " ) One pregnancy in a companion ' s family can be directly attributed to the Doctor ' s matchmaking . After the Tenth Doctor ' s repeated insistence that it would be a " good match " , an alternate Peter Tyler pursued a relationship with Jackie Tyler . She was pregnant with his son by the time that the Doctor summoned Rose Tyler to Bad Wolf Bay . ( TV : " Doomsday " ) One companion was known to be pregnant while an active TARDIS traveller . After being exposed to psychic pollen , Amy Pond dream ed that she was pregnant with Rory ' s baby . ( TV : " Amy ' s Choice " ) She later fell pregnant and gave birth to River Song , conceiving her while in the Doctor ' s TARDIS and it was confirmed that being conceived in the Time Vortex had given River Time Lord - like characteristics . ( TV : " A Good Man Goes to War " ) Another companion , the male Chris Cwej , was known to have impregnated a couple of women — Ishtar Hutchings and Dep — that he met while the Seventh Doctor ' s companion . ( PROSE : " Happy Endings " , " The Also People " ) Captain Jack Harkness , a male , had fallen pregnant at an unspecified point in his life . ( TV : " Everything Changes " ) Other humans . Queen Mary I believed that she was pregnant , but this turned out to be a false pregnancy . ( AUDIO : " The Marian Conspiracy " ) In 1953 , Marjory Kennedy was pregnant with Father Hemmings ' s baby when she was murdered by Walter Seacombe . ( PROSE : " The Canvey Angels " ) James Stevens ' wife Natasha was pregnant with his baby when their marriage ended . ( PROSE : " Who Killed Kennedy " ) In 1987 , Sarah Clark was pregnant with Stuart Hoskins ' s baby . It was in part because of this that they scheduled a wedding for this year . ( TV : " Father ' s Day " ) In 1997 , Tilusha Meswani became pregnant with Phil Tarrant ' s baby , Sanjay , which became possessed by Kelzen . ( PROSE : " Infinite Requiem " ) Penelope Silver became pregnant with Norton Silver ' s baby . ( PROSE : " Option Lock " ) In 2003 , Annie Carpenter was pregnant with Michael Pembroke ' s baby . This fact helped them fight off the Scourge ' s attempts to feed on their negative emotions . ( AUDIO : " The Shadow of the Scourge " ) In 2005 , Agatha Ellis became pregnant with Godfrey ' s baby . ( PROSE : " Curtain Call " ) In 2006 , Cathy Salt was pregnant when she interviewed Margaret Blaine . Blaine , who was actually Blon Fel - Fotch Passameer - Day Slitheen in disguise , planned to kill Cathy , but let her go when she learned of her condition . ( TV : " Boom Town " ) Paul Langer told his son Clyde that he had impregnated Clyde ' s aunt , Melba . ( TV : " The Mark of the Berserker " ) Donna Noble mentioned that her friend Nerys had gotten herself pregnant with twins using a turkey baster . ( TV : " The Doctor ' s Daughter " ) In 2009 , Gwen Cooper appeared to be pregnant when a Nostrovite transferred one of its egg s into her body . ( TV : " Something Borrowed " ) A year later , Gwen became pregnant for real with her husband Rhys Williams ' baby . This happened despite her use of contraceptive pills . Gwen blamed the various medications she had been given as a member of Torchwood Three for the failure of her contraception . ( TV : " " , " " ) Tameka Vito became pregnant with Scott ' s baby . ( PROSE : " Beyond the Sun " ) In 5 , 000 , 000 , 053 , Cheen was pregnant with Milo ' s baby . ( TV : " Gridlock " ) Other species . Shub - Niggurath was pregnant when she arrived into the beginning of the universe from the previous universe . She delivered her child on Polymos , which became the Nestene Consciousness . ( PROSE : " Synthespians™ " ) At least one Aggedor was pregnant for nearly 100 years between the 40th and the 41st century . ( AUDIO : " The Bride of Peladon " ) In the year 200 , 000 , the Face of Boe fell pregnant , expecting " Boemina " . ( TV : " The Long Game " ) Behind the scenes . A few actors made public the fact that they were pregnant while filming " Doctor Who " . Caroline John was probably the first , though she didn ' t let producer Barry Letts know about it . Nevertheless she definitely was pregnant during the filming of " The Ambassadors of Death " , and even performed some ill - advised stunts . ( DCOM : " The Ambassadors of Death " ) Wendy Padbury was also pregnant during the filming of " The Five Doctors " and had to have rather oddly - designed clothes to conceal the fact . Unfortunately , she miscarried soon after recording the story . ( DOC : MM VHS 7 ) Tracy Ann Oberman learned of her own pregnancy during filming of her role as Yvonne Hartman in the two - parter " Army of Ghosts / Doomsday " . At least one " false " pregnancy was circulated by the " Doctor Who " production office . Mary Tamm claimed that John Nathan - Turner invented the rumour that she left the programme was because she was pregnant . In fact , though , her daughter ' s birthday was proof she couldn ' t have been pregnant while filming even the later part of her tenure .