have your back against the wall
US /hæv jʊər bæk əˈɡɛnst ðə wɔl/
UK /hæv jʊər bæk əˈɡɛnst ðə wɔl/

1.
estar contra la pared, estar entre la espada y la pared
to be in a very difficult situation where you have few choices and are forced to do something
:
•
With the deadline approaching and no progress, we really have our backs against the wall.
Con la fecha límite acercándose y sin progreso, realmente estamos contra la pared.
•
After losing his job and his home, he felt like he had his back against the wall.
Después de perder su trabajo y su casa, sintió que estaba contra la pared.