Randomness of a Wattpadian Girl 3

|¤| I need some major help |¤|

So, last night my phone just started to have these straight across gray/black/white lines appear and it is like ghosting the current screen on everything, and I have no idea what to do! It went away last night but it came back when I got on. I am worried and don't want to get a knew phone, can someone please help me figure out what it is! I can't lose my phone and everything on there. Nothing I do helps me figure out what it is, and I do have an LG X Power, so please help