Updated my software last night on my iPhone 7 - had the software downloaded, updated before I went to bed. Noticed this morning some issues with a picture, and then went into camera roll - over three years of pictures are gone. Last picture / date is from September 2014, but also even more pictures are missing from before this time period (like the start of my pictures - I have kept pictures from my first iPhone, transferring over as I upgrade iPhones). In Camera Roll and Collections I have a loading wheel and it says "Restoring" but I don't see anything happening or restoring. I have a recent backup on my iTunes, but I'm worried about plugging in the iPhone and losing even more. Any ideas/advice/solutions would be enormously appreciated. Thanks!