My Homepage/ Domain is Redirecting!!!!

Hello, today a few things have happened.

#1 When I type or click on my url my homepage comes up as a version of a page that I did not create. Or the page will come up with an image missing. I have noticed that there will be a new extension on my domain. For example… right now it reads:

https://ambermariephoto.com/WabjS/

I have no idea what “/WabjS/” is. This is an example of a page that was not created by me. If I sit there and hit refresh my page will work 5 times out of 10… with the other 5 times being unpredictable.

#2. I can’t work within my Dashboard. My Dashboard looks a mess… it won’t let me navigate. If I click “Plugins” it takes me to a link on my blog. Yes, it actually takes me out of my admin area and redirects me to a page on my blog.

I am using ProPhoto and I just updated to the recent version of WP. Also, my site is https://www.ambermariephoto.com

PLEASE HELP!