Welcome to the gastroenterology community! Please be patient and remember that the people that respond to questions on this community are all volunteers and have busy lives too. You should wait a least a couple days before "bumping" your post if it got forgotten. It has been less than a day since you originally posted your question so you need to be patient
In response to your questions, the dizzy episodes might be related to your gallstones
but the only way to know is to see if it goes away when you get your gallbladder removed. If the dizziness continues you should see your doctor or a neurologist about it.
I had dizzy spells before my gallbladder surgery, and i have them after. I do think they reduced in frequency, but I don't know if it was related. I had a weird feeling my body was "freaking out" about my gallbladder dysfunction
I also wanted to add that it's quite possible the dizziness is from anxiety. You may not feel as anxious after knowing you've had your gallbladder out. There could be a physical and psychological