I've had a few unstable plants pop balls on the lower nodes and branches week three or so of flower. They were sterile and most dried up and fell off on their own.
I had 4 seeds out of three and a half ounces on the last one, but the others previously didn't have any seeds and exhibited the same ball or so on the lower branches/nodes.
If you end up popping nanners due to rodelization the seeds will also be female. If you pop a seed or two from a male sac on a female plant due to genetic hermaphroditism to they will be female but will carry over the hermaphrodite genes from my experience.
Mine were on AK 420/47 plants which are notorious for their minor herm issues from a long line of sativa heritage. Sativa dom plants, especially with any landrace heritage (Acapulco, Columbian, Durban, Thai or Malawi for the sample) are notorious for herm if not selectively bred for quite a few generations.
What strains you running? I've never worried if they are just husks with no pollen tbh. The decrease in bud and resin production is usually due to a massive and uniform pollination. A few seeds won't do much, If anything to slow the plants down.
