Tested. no infection. no std. pee every 30 min. mod- lot of output each time. urgency each time. mild tender pain in pelvic area occasionally. ?

Frequent urination: ok your demographics indicate female yet screen name is male if male - consider prostatitis as a cause. If female - consider chlamydia causing a UTI - usually NOT tested for on a urine culture. an empiric course of antibiotics for chlamydia might work.

Specialist: If your doctor has tested and ruled out a UTI and STD's, you need to see a urologist or uro-gynocologist. They can test you for conditions such as interstitial cystitis and over-active bladder and treat you accordingly. In the meantime, take note of foods or drinks that can irritate the bladder. Here is some info: http://my.clevelandclinic.org/disorders/overactive_bladder/hic_bladder_irritating_foods.aspx