Difficulty/frequent urinating, spreading pain abdominal, legs...

Hello,

A year ago i started getting stingy/burning pain in my abdominal area, specifically under the ribs and above the hips. I also need to urinate very often in very little amounts. Usually i had to urinate even 5 minutes after i urinate. After a while the frequent urination got somewhat better, but i still can only pee for like 2-6 seconds at a time.

Over the months the pain has spread to my legs, in the thigh area, and just below the buttox. The pain has also spread to the genital areas (sudden stingy/burning pain that lasts for aprox. minutes).

Latetly the pain has also spread to my armpits, arms, chest, and around the knees.
I don't have painfull/bloody urination or ejaculation. I don't have fevers.

I have been to the doctor 4 times since it started a little over a year ago but he still doesn't know what it can be. Looking at symptons online i came across things like bladder infection and prostate infection, but my doctor dismissed that pretty much right away and claims the pain is "between my ears", basiclly saying i'm making it all up.

I have done blood tests and urine tests but nothing was found, they also did an echo of my hip area and found nothing.

I'm getting very scared and frustrated for obvious reasons and would like to hear other people's opinions on this matter.