Thanks for posting your query at DoctorSpring.com. I am Dr.R.K and I am pleased to assist you.
Yes, it is normal. Gallbladder stores bile before it is utilized for digestion. Bile is reabsorbed in the terminal small intestine.
If gallbladder is removed, this storage function is lost and some amount of bile which is not reabsorbed can be lost in stool. So it is normal. It may even cause diarrhea.
For the pain in the upper left quadrant, I would suggest an upper GI endoscopy to rule out acid peptic disease. Since you have not mentioned about the liver enzyme levels, I am not able to comment on that.
I hope that answers your question. Please let me know if I can assist you further.