Washington Capitals star Dylan Strome had an emotional day on the ice Thursday ... 'cause after crushing the Montreal Canadiens 8-4 on the road, he revealed his wife went into labor during the game -- and he missed the birth of his third child.
Strome shared the news with reporters in front of his locker ... saying while he is proud of his wife, Taylor, he wished he could have been by her side in that moment.
"Definitely playing with a lot of emotions," Strome said.