hemi or not is the question

right bought 5 cheese strain feminized seeds from the greenhouse company in amsterdam.
to my ignorance i did not bother to check them as belief was plants would be female.
come harvest time i find many seeds, i checked stalks to c if any was dominant males this i could not see so i assume one of them was a hemi plant infecting the rest /4/ so now i have a load of seed the question is could these seeds i have now be a possible male /female /hemi should i just grow and c wat comes of em or chances are they are hemi
theses seeds was 100% guarnteed females lol cheers for the replies

p.s just put 4 white widow and 4 cheese guarnteed feminized onto 12hr and found 1 white widow to be a male dont bother with the green house feminized seeds from amsterdam.

I,m sure u can stress any plant into hemi's ....uh hermies

i dont think i have stressed them tbh there is nothing i can reflect on to cause stress i have my grow medium nearly perfect running like clockwork but the question is about the seed i have produced not what i had ive dealt with that cheers