Ureaplasma often mistaken as a harmless part of your normal microflora, is a very frequent infection and can be found in 40–80% of sexually active women. While commonly present in the vagina, the cervix, the urethra, the endometrium and the seminal fluid, attached to the surface of the spermatozoa and even in the amniotic fluid, and the placenta during pregnancy, it can have far-reaching effects, particularly on your fertility.