IPhone Lock Screen Stays on forever?

I went to sleep with my phone on 80% battery and woke up to my phone still lit from notifications. I thought it was perfectly normal coincidence until I saw my battery percentage was at 3%. Then I realized the notifications that was given me was not recent at all.

I searched this up over the internet and read that if you change your auto lock to 2 minutes and back to 1 minute it will change it back. Didn't work.

Now whenever I get a notification, the screen stays lit and I have to manually turn it off.

I'm running the most recent iOS 7 update and I have an iPhone 5s.

You could put of Wi-Fi when you're not using your phone, so you don't get notifications from that. Other than that I wouldn't know what else could help…