I have had trichomonas that was supposed to have been treated about 3 years ago. Less than a year after that, symptoms of it came back and they have been coming and going ever since. Several months ago, I noticed that when I whipe after I urinate, there are little brown specks on my tissue that almost look like dirt. I also have a clear, sometimes yellowish discharge and a strange (non fishy) odor. These symptoms increase during my period. I have been tested for STDs through pap, urine, & blood work and they all came back positive. What could be the problem?