There are three conditions that determine whether you have gallstones.
1. Elevated liver markers in the blood such as albumin and bilirubin. Elevated blood works such as yours indicate that somewhere in the body may be some infection.
2. Pain in the upper right quadrant that radiates outwards as in intensifies.
3. Thickening of the gallbladder walls.
Ultrasound in the right hands is very good at detecting Gallstones but the doctor should send you to see a consultant if the symptoms continue and they affect you life and sleep. You need a clear plan to get your doctor to send you to a consultant. Ultrasound isn't infallible as I ejected a 25mm (1 inch) gallstone after one.
Not eating and or restrictive eating can lead to serious psychological condition and also make you health worse. The doctor will end up sending you to counselling rather than treating you. Always talk to you doctor about the pain and inability to sleep; don't overly talk about the restrictive eating.
There are several things you can do yourself, such as making sure you are as active as possible, eat as well as you can with wholesome food. Improve you sleep; there are several good articles on line about sleep hygiene. If you need pain killers use them sparingly and keep away from aspirin and ibuprofen.
If you cleansing and clean bowel is the paramount and then keep it clean by finding away to eat that includes a variety of foods. A slow or dysfunctional bowel can adversely affect the liver and bile. After I saw a consultant and had a MRI, I found out that my bile won't stop precipitating in the bile duct and forming stones, it's a problem I have to deal with but I still need to live and have relationships with my family. I'm on flush 180 now. So don't lock yourself away in isolation, not eating, and feeling sorry for yourself; you need to find a life for yourself now before you spiral downwards.