Gallbladder attacks while pregnant?

Meech
This is my 2nd trip to the hospital this week with what they believe is a gallbladder attack.  The worst pain ever.  I live an hour away from the hospital so not very happy about driving here in the middle of the night feeling like I'm having a heart attack.  Ended up here by ambulance this morning.  The pain is the worst pain ever and lasted almost 6 hours with no relief.  I've been told this is very common in pregnant women.  34 weeks