Scotty
Despite Carol's protestations, Scotty panicked daily - often hourly - at the possibility of impending fatherhood. At Kirk's insistence, the Chief Engineer and Keenser had already moved into larger quarters.
Scotty had yet to figure out how to explain the baby to Keenser or Keenser's presence in their new quarters to Carol Marcus. Carol remained unaware that she was even moving. Scotty's "special relationship" with Carol (which remained the worst kept secret on the Enterprise - besides Jim's teddy bear) had always manifested itself in her quarters.
Despite his reputation for being the moral compass of the bridge staff, Scotty took the liberty of adding a third bedroom to their new quarters so that Keenser wouldn't have to share with the baby. Scotty hoped that would avoid Keenser seeing Carol in her normal non-choice of sleepwear.
Carol refused for the umpteenth time to see McCoy and insisted her symptoms could all be attributed to the Ferengi Gravidity Pox. Through tears and a vicious temper, she insisted Scotty confirm the outbreak himself as she needed to throw up. The pox gave its female victims all the symptoms of pregnancy - the single, raised pox itself resembling a small baby bump - without the offspring. Male victims experienced bouts of insufferable pride about their malehood and fertility.
Fortunately, males with the pox were sterile until the infection ran its course. In this way, Mother Nature protected herself from the rapid production of new lives doomed to low intelligence.
Why Scotty's queries to the conference authorities - and McCoy's attempts to transfer Carol's treatment records - got delayed three weeks remained inexplicable by the Communications Department staff.