http://www.usmagazine.com/celebrity-moms/news/keri-russell-is-pregnant-expecting-baby-with-matthew-rhys-w160820

According to Us Weekly, Russell is four months pregnant. Russell and Rhys' reps have yet to confirm the pregnancy.

http://celebritybabies.people.com/2016/01/17/matthew-rhys-jokes-pregnant-keri-russell-incredibly-effective-with-blow-dart-the-americans/

We actually haven’t made any changes based on the happy news, except that we are happy,” said exec producer Joel Fields. Russell’s co-star and the expectant father Matthew Rhys then joked: “And she’s now incredibly effective with a blow dart from a seated position at 12 feet.” PLUS: The Americans might end with Seasons 5 and 6 (http://variety.com/2016/tv/news/the-americans-end-six-seasons-keri-russell-matthew-rhys-1201681630/).