Get a doctor's appointment to get checked out so that you don't end up in ER again?
Rick and I have both had gall bladders removed (it's SOOO the couple thing to do), but our pain with it was pretty different. My entire abdomen was a twisted, in-frikkin'-credible, take me to the ER NOW kind of pain, which didn't go away until they put morphine in me (mmm....morphine). Rick's, on the other hand, was a regularly occurring thing that increased with frequency (once every couple of weeks to every week) and increased pain (from "i have an upset stomach" to a very big man in tears).
In any case, get it checked out...please? =)