So let's be mathematicians and add this all up ...

Hailey Baldwin recently told Vogue Arabia that she's always wanted kids but now that she's now married to Justin Bieber, having babies is a "closer reality."

Closer, indeed! We spotted Hailey going to a Beverly Hills doctor's office Friday, just a few blocks away from the couple's luxury Montage residence, and while there's no way to know for sure, we DO know a TON of celebs go to a very famous OB/GYN in this building. Another thing we know is this ... Hailey was wearing a VERY loose-fitting plaid pantsuit and a baggy sweater.

Now, clearly one of our favorite pastimes is speculating about gestating and whether of favorite female celebs are pregnant at any given time, but if you add this up -- Hailey's quote about babies, the couple's newlywed status, Justin's love of children, their nesting in Canada and back in LA -- we're thinking that even the simplest of equations and algorithms might just place odds on Hailey being preggers!

Now, in the meantime, just for fun and weird wackiness, our videographer asked Hailey about a recent report that claimed she and Justin got in a fight over him playing ex Selena Gomez's music at home (uh, yeah -- that seems likely). And here's how that? went down ...