First time auto , are they really autos -_-

Hey guys I was given a few coloured Dutch passion auto gem seeds , they sprouted on the 21st September , then they showed a couple white hairs (or pre flowers ) on the 26th October , since then they have done what I thought is stretching but have not seen anything further other than show pre flowers , I'm used to normal feminised seeds and starting to freak now that if there not autos then I'm going to end up with 2 plants too big for any room I got

If they PREFLOWERED on their own without light change , then more than likely autos.
It takes around a week or so for ACTUAL preflower ( crowns ) to show. It siunds more like you are at sexing stage.