doesnt sound like your pregnant. taking tests every month and still getting negative tests and only having a discharge and pains means your having discharge and pains. not pregnancy. could be a std. yeast infection. normal discharge...a number of things
Well alot of PMS symptoms can seem like pregnancy symptoms. If these problems still occur, and you still feel like you are pregnant see an OBGYN. :)
first question.....Have you missed a period? If you say you've been taking tests for the last couple months and have had no period then you could be prgnant. The best time to take a test is after your period is supposed to be due. Those sound like pregnancy symptoms you have. IF you want to be 100% sure then go see your doctor they will take a urine test or a blood test or both. Thats the way to be positive about it