Recently I had my gull bladder removed. I am 18 weeks pregnant and there is a fairly large lump right below my ribcage on the right side. I am experiencing stomach cramps and nausia. Without a gull bladder, is it possible that I am experiencing cholecystitis problems?

It's a GALL bladder, not a gull bladder.

No, you wouldn't be experiencing cholecystitis without a gall bladder.

Time to talk to your doctor about this "mass."