It sucks to feel this way. I mean, I'm a guy so never been pregnant, but I can imagine what you are going through with your gallbladder, the nausea, etc. I want you to think about it like this....you made it through 23 weeks of nausea. Right? That took great courage on your part and you were very strong. You WILL make it through this too. And I think you'll make a great mother. I mean, you got pregnant although you are emet. That took a huge leap of faith and a huge desire to have a child. You really want this child and you are going to be great. Hang in there. I know it's easy for me to say being on this end, but you WILL get through it. I promise you will.
I had a friend who had her gall removed and never got sick again. You'll have to monitor your diet but if you do that, you should be okay. I think people usually suffer post-removal by eating the wrong foods.