Blac Chyna Rob Went In-N-Out Now I'm Goin' Burger King

5/6/2016 3:48 PM PDT

Blac Chyna: Rob Went In-N-Out ... Now I'm Goin' Burger King

Blac Chyna has broken ranks in the burger department, making a Burger King run hours after TMZ broke the story ... she is pregnant with Rob Kardashian's kid.

Chyna was in downtown L.A. with a friend, scoring a few bags at the drive-thru.

Rob -- a big In-N-Out fan -- and Chyna hooked up 4 months ago, and pretty clearly hooked up again soon thereafter.