it was working just fine this morning and i put a hard cover case on my phone and it hasn't worked since. and the case is designed for the phone so it's not covering anything up.
I have had a similar problem with my flash not working, usually if my battery goes below 25% or so it won't allow the flash to work. Also it sometimes stops working if I take a lot of photos back to back, then restarting the phone usually helps.
Hi Dawn! Since the only thing you did was put a hard cover case on the phone before it stopped working, maybe it really isn't a hardware issue, but instead a software one. Launch the Camera app and take a look at the status of the flash according to the flash icon on the screen. Is it set to Automatic, Force-Flash, or Disabled? You have to make sure it is not set to Disabled in order to use it while taking pictures. Hope this helps!