Is it possible for bloating to be the only sign of gall bladder not functioning?!?

I can't tell you if that's the only symptom, but I've been dealing with that issue. I had gallbladder tests done as well. Had multiple gi tests and have found nothing with all of them. IBS could cause pain; I also am now looking into gynecological issues with my doctors. There could be lots of reasons for chronic bloating and distension. Look up other conditions and symptoms you could be having to lead to different diagnoses. Good luck to you!