Obstruction of one ureter does not reduce how much people urinate. Obstruction can stop or reduce urination if blockage affects the ureters from both kidneys or if it affects the urethra. Obstruction of the urethra or bladder outlet may cause pain, pressure, and distention of the bladder.
The presence or excess growth of yeast cells, bacteria, or viruses can cause a vaginal infection. A vaginal infection may occur when there is a change in the normal balance of organisms in your vagina. The three most common types of vaginal infections are: Candida vulvovaginitis (yeast infections).
1 Not including HIV, the most common STDs are chlamydia, gonorrhea, syphilis, genital herpes, human papilloma virus (HPV), hepatitis B, trichomoniasis, and bacterial vaginosis.  Chlamydia is the most commonly reported infectious disease in the United States.