Vagina does not itch if you are pregnant If you have vaginal itching consider if you have a mold infection. The vaginal discharge starts to increase and is all pasty to prevent bacteria from entering the vagina so as not to infect the fetus. In this case it does not cause vaginal itching. If the vagina is itchy consider if there is a mycobacterial infection. This is because during pregnancy the vaginal defenses of a woman are poorer and the pH of the vagina decreases, which in itself is conducive to the growth and reproduction of mycobacteria in it. Therefore, if you find vaginal itching after pregnancy, you need to go to the hospital to have a white belt test in time.