Localized pain on back right shoulder pain - gallbladder?

I have a sharp pain in my back under the right shoulder blade. The pain is deep and intense and is not from an arm or shoulder injury. I am frequently nauseated and have always suffered from constipation. I've had pain in my upper abdomen/stomach area which is frequent and uncomfortable. Could these be signs of a gallbladder attack or gallbladder problem?

47 year-old woman; 200 pounds; 5'7' and I typically try to avoid excessive carbs but not a true Atkins-style dieter. Thanks in advance for your opinion.

[turkee23]

yea could be, need to get an ultrasound to be sure.....