Where did my pictures go!?

[AC Question]

OH HEEELLL NO!! I got up this morning and ALL of my pictues/albums are gone out of my picture app!!! I had a ton of valuable pictures and videos of my son in there. They're in my cloud but I am not clicking on the 100+ pictures one at a time to import them back into albums in my pictures app!!!!! Everything else on my phone is still in working order.....
Where the crap did my pictures go!? NOT HAPPY!!