Dear patient, If you think the wet panties have a urinary tract origin instead of vaginal mucus, than I would recommend you to visit a Urologist. There are different types of urinary incontinence, which a specialist will be able to determine the right one after a thorough medical examination. It can be a: - Neurogenic bladder. Small amounts of urine loss both day and night. It can be treated with drugs such as Betanechol, which help you contract and empty your bladder. - Fistula. Continuos loss of urine day and night. Treated with surgery. And then there are some conditions which I don t think apply to your case such as Hypertonic bladder. Regarding the discoloration, if stds are not the cause, I would like to know more about your menstrual cycle. Often, what we call estrogenic cycles are the cause of irregular menstruation associated by intermittent uterine bleeding that end up as spots in your underwear. In this case, progesterone contraceptives are the recommended treatment. In case of a desired pregnancy, please consult a ob/gyn. You will need to stabilize your cycle or help the ovulation, and the spotting will disappear during pregnancy. I hope I have helped you dear! Wish you health, Manoku Eni, M.D.