severe Urinary pressure please help

I'm a 22 year old female who started getting urinary pain and pressure since Jan of 2010 to present feb 2011.
My pain feels like it in my urethra with a pressure, numbness and intense throbbing pain.
It was painful all the time but after a year it seems to be worse when I'm full, at night or when I'm on my period. And is also worse before and after I pee.
It feels better when sitting and not getting up and down.
I sleep pretty well but I take sleeping medicine since I have anxiety and have always had bad thoughts at night.
I'm sensitive to movement and intercourse is painful.
My state of mind is nervous, scared and stressed although I am positive.
Eating too much food makes me feel worse and so does processed and fast food.
I have been tested for many diseases and everything looks normal one doctor said it could be interstisial cysitis.
For about a month and a half have had swollen burning hands and feet and hives. My blood work for rheumatoid arthritis came back high and I am allergic to gluten, wheat, soy and dairy all at levels threes on my blood work.
I have also recently had constipation and bloating. With my urinary issue it's hard to start my stream feels a little numb and is hard to go poop like i can't use the muscles very well.
Smoking marijuana also makes my symptoms worse.