It is danger and an infection of the mycoplasma genitalium bacteria can be potentially dangerous, especially if it starts to affect more than just the vagina or urethra. In women, the infection can spread to the womb and ovaries, leading to pelvic inflammatory disease, which can result in infertility, ectopic pregnancy or chronic pelvic pain. In men the infection can cause the infection can spread from the urethra, to the prostate and epididymis. If this happens, it can lead to prostatitis and epididymitis, which could result in discomfort and potentially infertility. Men are also likely to develop reactive arthritis in response to the infection affecting the immune system.