self pollinated or something?

So I grew out a royal medic by royal queen seeds and in the end i was able to collect about 20 seeds from her while harvesting the bud. I watch all my plants very carefully and only grow 2-3 at a time, and i did not find any bananas on her. My grow tent was brand new back then and I'm pretty positive that i didnt have any other pollen in there. but i did have a plant go hermie in that same room a couple weeks before. When I grew out 3 seeds from those 20 i collected though, they were almost duplicates of the plant they came off of. I had the same thing happen to my therapy plants. (cbd therapy, cbd crew) I just harvested two therapy plants that i grew out from the few seeds i got off of the cbd therapies and they were exactly, EXACTLY from beginning to harvest like their mothers. Sometimes too I get weed from my LP and I get 1 or 2 seeds here and there, not often but sometimes. I've got 3 seeds from VCDC and 1 from CBD digweed. Now I've grown out another royal medic from those seeds I collected and it's a male. no female parts in site what so ever but lots of balls everywhere.

So my questions are:

1- why does bud sometimes have seeds even though it was not pollinated? Because some of these seeds I found, it was clear that if some pollen had been in the tent, it would not have been pollinated where it was. It's mostly the pre flower sites that had nice fat seeds in them, while all the bud all around was left untouched. but each of those calyx's at a branch splitting, which is usually where you see the first pre flowers, were pregnant with seed.

2- i forgot my second question..i just woke up lol. plus i've half answered my own question but i'd love to know what more experienced growers think.

unless mechanically placed, bud with seed has been pollinated
calyx often swell but still have no seed, when they're not fertilized.
a late harvest etc could trigger a last ditch effort for a girl to show a few or
more male parts to get the job done. after all her only job in life is to reproduce
with more seeds, Shiva assured she found a way

Only reason a Female plant would produce seeds outside of pollination is because of Stress or Intentional forcing the plant to produce seeds via Colloidal Silver etc... http://www.growweedeasy.com/how-to-make-feminized-marijuana-seeds. Some where in Flowering stage you stressed the ladies out too much and they started to produce seeds. My first grow I stressed a few of my plants out too much and they started to produce seeds...

Those big seeds might be the only ones you can see clearly. If you break up a nug, in a grinder, see if there are tiny, almost specs of little seeds.