The look like seeds to me. not necessarily pollen sacks. the specific pics are where we see your fingers: those looks like seed sacks to me. I'd watch them for a few more days. if those 'balls' get bigger without showing signs of opening then it is "hopefully" a seed...i'm mean i'd "hope" for a few seeds versus a pollen sack. BUT that's dangerous because if it opens, then the cat's out of the bag in your growroom! pluck out a few balls, open them up gently far away from your plants and try to see if it's a seed or pollen.
My experience with pollen sacks is that they 'bloom' in clusters of 3 and more. the 'naners (shaped like banana's or boomerangs) come in singles and usually (IME) very late in flowering. Yours are clearly single balls and not 'naners.
If they are seeds. investigate everything. there is male in the environment.
good luck.