I am afraid I shan't be posting for a while. It seems that many people in my region are having the same trouble with new posts and editing. We are patiently waiting for the infuriating spinning wheel to clear and let us post. But it is not.
If this is happening to you, there seems only one solution. Although clearing the cache and history has worked for some, for most people the only thing to do is to go to your Dashboard, click on Settings and scroll down and choose Old Format.
Although it works for rudimentary posting, there are inherent difficulties with photos and formatting.
The help desk is just posting generic information at this stage, without any proposals for a better work around, or information on what they are doing to alleviate the problem. In fact, they have not quite accepted responsibility for it, insinuating that it may be due to updates made to one's computer rather than Google or Blogger itself.
So please excuse this post if it looks a little 'primitive'. I hope you are having a more comfortable time with your blog, wherever you are.