Lower Back and Hip Pain

Hello, new guy here had some issues with some pain and was hoping to get some feedback.  I turned 30 about 5 months ago now. And for the past 6 months I have had some health problems.  Mainly Lower back and hip pain. The pain will be in the center of my lower back just above my tail bone,  move to the hips and down my thighs and back of my legs sometimes.  

I had gone to the hospital one morning due to the fact when I tried to sit up or bend a the waste I would have sharp pains in my right leg between my hip and pelvis.  The doc there did an x ray and a CT scan, blood work and a urine sample said everything seemed to be fine, gave me some pain meds and recommended me to see a general prac doc if the pain goes on, thinking maybe it was joint pain.  

I'm a student and the health coverage I do get isn't taken by most general docs around here.  I had seen one out of pocket and he said he wasn't sure either.  Once again with the pain meds this time naproxin for what he thought may be just inflamed joints.  

After digging around online, (which always seems to be a bad idea to me )  I came across the web sites that listed my symptoms as maybe a prostate problem.   There isn't any history in my family with prostate cancers, fathers or mothers side.   I have never seen blood in my urine or semen.  Other then the pains I have had, I'm not sure what to think about the situation.  The pains hurts most when I sit. They often move from hip to hip, and upper parts of my legs, front and back and inside.  Pain in my buttocks as well along with the lower back pain. Sometimes moving to my testicles.

I have made and appointment with a urologist for 2 weeks from now, and I'm trying in the mean time not to let my imagination run away from me too much on what all could be wrong with me..

Any feed back would be greatly appreciated.