Could it be kidney or gallbladder?

I have been suffering with aching pain after I eat(approx. 1 hour, sometimes the next day after a meal). The pain seems to begin in my back where my right kidney is. It then radiates to the front under my right rib. I am also constipated most the time. I take laxitives about every fourth day. If I didn't I would not have a regular bowel movement.  I can not take care of my children because I spend most my time in pain and laying down.
I am a 32 year old female. I don't smoke, or drink coffee. I am usually an active, healthy person. This has been going on since last February. I have had many tests which include the following: An upper GI (normal), an ultrasound (normal), blood work (also normal)..today I see an internal specialist, and October 2 I get a CAT scan on my gallbladder. I would like to know what a doctor thinks could possibly be wrong with me (what areas to investigate) or I'd like to hear from people who have had the same symptoms, and what they were diagnosed with.
Sincerely concerned....Lisa

[Dr. Erik]

It's difficult to say what it could be. Are you urinating normally? not too much or to little? It tends to sound like possibly the Gallbladder. An ultrsound will not always show a problem with the Gallbladder. You may need a "HIDA Scan"
Consult with you Gastroenterologist.

[imkindly]

I am not a doctor, but it sounds like you might have a gallstone. The CT Scan would show if there are any gallstones. If a gallstone temporararily gets stuck in a bile duct (blocking the duct), it can cause symptoms like "pancreatitus (pancreatitis)". (Pain after eating....pain that wraps around under the rib to the back).

[frogster]

I don't know if you'll get this or not, but I thought I'd throw this out there.  I had similar problems, and the same tests run about a year ago, and they decided to take my gall bladder out.  I just wanted you to know that I am still having the same problems, and the doctors don't know what to do with me.  So my suggestion to you is make sure that your doctors don't sluff your problem off on your gall bladder just because they can't figure it out themselves.  If I could go back , I would not have had my gall bladder removed.