What causes a bacterial infection to develop and can it keep you from concieving?

Bacteria/opportunist: Bacteria are basic opportunists.They grow & reproduce anywhere they find a source of moisture & nutrients, if a germ like chlamydia or gonococcus are introduced into the female genital tract, they can find plenty of nutrients along the linings. Over time they can produce scarring of the inside of delicate structures like the fallopian tubes & reduce fertility.