Prepare to have some mixed feelings when Switched at Birth finishes up its fourth season.

Who Is About To Announce An Unexpected Pregnancy On 'Switched At Birth?'

On Friday, series creator Lizzy Weiss took to Twitter with a tease on what's about the happen in the season finale coming up this year. She didn't mention specifics on what would take place with the plot or characters, but she did point out how viewers will probably feel about it.

Upcoming Episode Of 'Switched At Birth' Will Be 'Unlike Anything Else'

Obviously, this leaves a lot to the imagination since there has been a lot of craziness with Bay, Daphne, their parents, lovers and more.

Bay and Emmett have called it quits in their relationship and it's going to have a deep effect on her, according to Lea Thompson (Kathryn).

"With Bay dealing with the fallout from her breakup, Kathryn always tries to keep a stiff upper lip and keep everyone moving forward with a lighter touch," the actress previously told E! News. "She's going to move forward with her musical, but she's also going to get hit with a lot new drama."

There was also the announcement that one of the characters will wind up pregnant, but of course, no one outside of the ABC Family network has any idea on who it is. It could be Bay or Daphne...or it could be one of the moms...or someone else entirely.

Switched at Birth returns to ABC Family on Monday, August 24 at 8 p.m. ET.

Tags: Switched at Birth television ABC Family