I can see what you are talking about.
It is somewhat normal for a female plant that has not been pollinated during the flowering stage to start to develop a few male flowers. This often starts low on the plant and slowly moves up until there are a few even in the large top buds.
In the past I had a few plants do this and naturally the clones from one of those plants also did it. It was fairly easy to go over each plant and pinch or cut off any male flowers.
Picture is slightly out of focus but those do look like seeds starting to swell up in the calyx. That is also something I have experienced but not very often and not as many in one spot like on your plant.
None of what has been shown in the photos is a disaster or a reason to be overly upset.
By the way, the process the female plant will go through has a name. It came up in a thread early this week as it happens. It is called "rodelization" and can be looked up on-line with a google search. Here is the link to the msg in the thread from Tuesday...
https://www.420magazine.com/community/threads/seeds-from-clones.515213/#post-5541641
Again, it is not something to get upset or worry about. Just one of the little lessons in the life of a gardener.