Nicki Minaj -- I'm NOT Pregnant ... Yet

Nicki Minaj is NOT pregnant with Meek Mill's baby, at least not yet … TMZ has learned.

Minaj seemed to say Saturday in Pittsburgh she was having Meek's baby … referring to Mill as her “baby father."

Sources close to Nicki say she uses the phrase "baby father" frequently - at least twice on this tour, but it's not the same as "father of my child." It's just a term of endearment for those she likes. She's even referred to Lil Wayne as her baby daddy in the past, even though they're just friends.

We’re told Minaj and Meek feel they're in it for the long haul and want kids … but there will be a wedding before they’re picking out baby names.