We have many micro-organisms living harmlessly—even helpfully—in our female and male reproductive tracts. However, some certain bacteria can cause us problems!
What are names of these troublesome little guys? Mycoplasma hominis and ureaplasma urealyticum!
We can live our lives normally and not even know (no symptoms) we have until we start to have a miscarriage and then the doctor will do a test.
What happens is the infection with these bacteria can inflame the endometrium (the lining of the uterus), making it impossible for an embryo to develop.