Laura, i have also been told that before.
However, I was told that if the pain is up under your right rib when you're pregnant, then it's more likely to be related to p/e and not gall bladder. apparently if you eat something fatty and you get the same feeling, this is also related to the gall bladder. i was of the understanding that with the gall bladder, it was more under your ribs, like across the top of your stomach, not up under your right rib (hope that makes sense! to those of us who have had p/e before, i'm sure it does it's just hard to explain to someone else!!)
i could be wrong, please don't anyone take my word as gospel as i'm only repeating what i've been told and as we've all found out, different doctors have very different opinions at times.
hope this helps
Cheryl - 29
DH - 28
DD 08.18.01 33 wks pre-e and hellp syndrome
EDD #2 06.04.03