Well, I'm sorry to say you have been the recipient of Cannabis pollen from somewhere. The simple fact is to get seeds you must get fertilized.
"Marijuana plants are either male or female. The male Marijuana plants produce pollen which pollinates the flowers of the female Marijuana plant, which once pollenized, produce seeds . If the female Marijuana plant isn't pollenized (if there are no male Marijuana plants nearby producing pollen), the flower/buds continue to develop and produce THC. Female Marijuana plants which are not pollenized are referred to as sinsemilla (without seeds)."
Its not the end of the world, just means you get a couple seeds (bonus) & your girl gets to feel as though she's passing on her genetics.
GWN