How to back up new things after backing up old on iPhone 6s?

So I got an iPhone 6s today and I made a Really important video on it and when i plugged my phone into my laptop it showed restore the stuff from my other iPhone 5 so I decided why not, and when I did it deleted all the stuff I had that day and put the old stuff. IS THERE ANY Way I CAN GET THE OTHER STUFF BACK?

Your icloud accout

You could back it up with iCloud and in case you want to have some great apps in terms of security I prefer you should try Leo Privacy Guard it's the best app and now included in the world's top ten apps.