Pages disappears & can't add any

Dear WP,
2 days ago i was working all day on my portfolio.. i actually published more than 3 pages but “god knows what happened” the pages just disappears!
The funny thing is on the “pages” you can see i published 5 pages.. but it showes: No pages found. i also click on those “5” but still “no page found”.

I tried to “Add New” page.. i create the page.. i publish it.. NOTHING! i can see only HOME. I checked in the editor the page.php exists.. I update my WP as well but nothing ??
I don’t think i did something wrong, its not my first time using the wp.

What’s wrong??