It's not "free autoflower seeds" as drJynx writes.. It's "free garbage seeds"..
- If it's a sneaky pollen sac on your plant, the seeds are likely gonna end up as hermas.. If you brought pollen in from the outside, it's likely gonna be pollen from a herma, and you'll get a lot herma seeds. And even if it was fro a male, you'll end up wasting a lot of time growing male plants before they sex, as you'll get around 50/50 fems and males..
- hope its the option were you brought it in from outside, and that it's some pollen that got stuck on your fingers and you contaminated it by touch, and not by air.. And always wash your hands, before touching a plant in flower, you never know what you'll leave on it.. Preferably, don't touch the buds at all, unless absolutely necessary.