Suspected gallbladder cancer

Hi, I’m having a CT on the 15th due to an ultrasound finding a mass in my gallbladder, 12mm, so it’s small. 
I’m not freaking out and I am honestly of the mind, what will be will be. But, this waiting to find out is the worst and everything I read about it doesn’t seem to apply to me as in, I don’t have the serious symptoms noted and I feel it’s most likely be benign. Has anyone gone through this, any information appreciated