@Inganjawetrust, can’t upload pictures in the comments from reading many other accounts it’s caused by the right amount of stress where male parts grow in a few off places on the female plant and because it’s a female plant that the male parts it will fertilize itself a little bit and you’ll get a few feminized seeds. Most breeders spray there plants with colloidal silver and the bud is garbage afterwards but it will make the female plant produce all female seeds but if you stress it the right way it can happen naturally.
like