'Little Women: Atlanta' Star ... Minnie Bun in the Oven

"Little Women: Atlanta" stars Ashley "Minnie" Ross and rapper Pastor Troy are expecting a little miracle to join them soon ... TMZ has learned.

Sources close to the reality stars tell us Ashley just found out she's pregnant with PT's baby and both are very excited.

Ashley and PT's off-and-on romance has been covered on the show, but we're told they want to keep the pregnancy off camera ... so no diaper drama story lines, for now.

Even though their relationship was shaky for the last 8 months, our sources say they're good now. Obviously, they were VERY good on at least one occasion.

#Congratulations