IPhone pictures being deleted?

Okay so I got my iPhone back resently thank god! Because it was locked before and I forgot the passcode. But I reset it and found a back up from the previous day. So right now I was taking pictures of my puppy and when I went to the camera roll they were not there. I turned the phone on and off and they were still missing. Everytime I take a picture it's not in the camera roll. I don't have any other albums. I don't use photo stream either. But if i take a lot of pictures at the same time and go to the camera roll it says "saving… " then it disappears from my camera roll. So its saving it somewhere. I guess. I don't know please help… I have so many problems with this phone -.

Connect iPhone to computer, and then open "Computer", iPhone should show as a drive letter there. If not, please follow these instructions: In iTunes, right click on your iPhone and select "iPhone Options". Under the "iPhone" tab, make a tick in "Enable Disk Use". Click OK. Unplug your iPhone, then replug.

Now follow steps below
Step1: Download the latest version of this Photo Recovery software, then install and launch it in Windows machine correctly.
http://www.001-software.com/picture-recovery/
Step2: Sync your iPhone with computer. Then you should see it shows as a drive letter in 'My Computer' like H:/.
Step3: Select iPhone drive letter and then click "Next", you will find all your lost files in the lists.
Step4: After the automatic scanning, it's time to finish all the steps by clicking "Recover" easily to Recover your files!