They end up having to go to the doctor because two days later, Elsa's at the point of coughing green until she pukes. Turns out it's a chest infection, so she gets some antibiotics.
It's makes her better, thank goodness, but she comes to Anna on Saturday afternoon, all embarrassed and meek. Uncomfortable is probably the word, and it makes Anna's heart quicken with trepidation.
"I've got a...thing..." Elsa says. Anna looks at her blankly, so she tries again. "Y'know. A... thing."
Nothing. One more try.
"Antibiotics? And pregnant? A thing?"
Oh. That.