Urinary, endocrine Diagnosis: Disappointment! =(?

I’m 17 years old. I have a few problematic symptoms that have appeared slowly over the past few years/months. They include frequent urination, frequent, uncomfortable hunger, frequent bowel movements(diarrhea more often than constipation) and what looks like exstensive acne and dry skin. Don’t know if they’re all related, but they’ve occured quite suddenly with growing frequency. I had a blood test for Diabetes last year - negative. Another blood test for parathyroid hormone - negative. Now my urologist is focusing on my urinary symptoms and gave me March 9th, VESIcare for a month, didn’t work at all. Yesterday, April 29, gave me Santura to "test out" until end of May. I’m so frustrated since only then will he try a diagnostic round of tests. =(tired of testing drugs I can’t play sports because of these symptoms. a lil help?
I recently found a disease called either hypothyroidism or hyper-thyroidism. could this be it?