What Causes Profuse Sweating And Excessive Thirst?

I am in a court apt drug program.., and I keep giviing diluted urine samples.. I have been to doctor , and have been put on prescription drugs. Clonidine , for night sweating.. , Citalopram , for depression..., and now Trazodone , for sleep.. I thought it might be menopausal reasons (sweating at night) I still am not sleeping, I wake evey couple hours and extremely thirsty... I have been watching water intake a little better and have been trying V8 juice.. I am required to test 2-3 times a week in program and at least every week or every other week I am getting dilutes... I have been informed that since I have given normal samples to them and am able to, that there is no reason I cant give good ones everytime.. I am sober and I am not trying to dilute any samples.. however I have been ordered to go to jail approximately 7 times due to dilutes... So my question is... Is there some underlining medical reason that this might be happening.?