when does brennan get pregnant the first time
Temperance "Bones" Brennan Brennan is best friends with her coworker, Angela, saying in the 6th-season premiere she loves Angela "like a sister" and is going to be an aunt to Hodgins' and Angela's newborn child. It is revealed at the end of the season six finale "The Change in the Game" that Brennan is pregnant and the father is Booth.
Abby Lockhart In season 12, Abby rekindles her relationship with Luka in the episode "The Human Shield" when her attempt to vent her frustration at him turns into a kiss and subsequently sleeping together. Initially, they decide to remain friends, but soon become lovers, noting that they always seem to find their way back to each other. Three weeks into their relationship, it is revealed that Abby is pregnant. Despite clearly wanting another child, his own having perished in Croatia, Luka states that he will support whatever choice she makes, as long as they can still remain together. After a week or so of uncertainty, Abby decides to keep the baby. Luka proposes to Abby while she is pregnant, but Abby is not comfortable with the idea because of her past problems, and later claims she 'doesn't need a white dress' to prove she loves him. Their baby, a son named Joseph (after Luka's father), or Joe for short (after Joe Frazier, the boxer whom Abby's long-disappeared father was a fan of) is born prematurely by emergency C-section at the beginning of season 13. Abby has to have an emergency hysterectomy. Joe spends several weeks in the hospital's NICU, requiring surgery during his stay. Abby and Luka's relationship becomes strained during this period, but they appear much happier in later episodes, caring for their now healthy baby boy.