I had a HIDA scan last week my doctor wants to remove gallbladder, need second opinion?

I am a 25 year old female. A few months ago I started getting upper right abdominal pain when I ate. It would move to my side and back. I lost my appetite and lost about 10 pounds. It went on for about a month before I went to the doctor. He sent me for an ultrasound of the gallbladder, which came back normal with slight sludge in the gallbladder. I decided to wait a few weeks to see if it would improve, but noticed at least one each week I would have an episode when I ate a large meal. I had blood work to check for H. Pylori, which came back normal, so was sent to a gastroenterologist. While I waited for an appointment, the pain improved some, but I would wake up with what felt like morning sickness most mornings. Eating would help some, as long as it was something light. I had a HIDA scan last week, which came back as an ejection rate of 76%. Technically this was viewed as normal, though my doctor still wants to refer me to a surgeon to see about having it removed.

My question is does this sound like it could be gallbladder related issues? I am young, work out at least three times each week, and have never had health problems. I have been getting frequent cramping feelings in my stomach, and it constantly makes noises (gurgling sounds). Of course I have asked around, and several people have mentioned that it sounds like IBS, stomach ulcer, etc. I will say my bowel movements over the past three months have gone from regular (everyday) to every three days. If i drink coffee, it is more regular. Sometimes though I will have four bowel movements in one day. My upper abdomen hurts when I press it. I had a fatty meal (fried chicken, fries, and a biscuit) last week, and I hurt for hours after.