Sidebar has suddenly moved from right to left?

Hi all,

I was wondering if anyone could help me? The sidebar on my blog has suddenly moved in the last few weeks from right-justified, to left and I really want to change it back? It’s also showing the secondary sidebar underneath the primary sidebar even though there’s no widgets in the secondary sidebar. It’s also not in line with the primary sidebar…

As far as I’m aware I have not made any changes to plug-ins etc in the last few months which could have caused this issue. I’ve just been posting like I normally do so I’m not sure how this error has occurred? The only thing I did do about a month ago was add a new author? But I can’t work out why this could cause an issue? I definitely haven’t changed the CSS so I’m reluctant to start messing around with it…

https://www.skyntherapyblog.com

You can see the sidebars stacking via this link: https://www.skyntherapyblog.com/the-skyn-blog/

Let me know if you need any more information from me.
Thanks!

Amy