Power steering going out?
 

The other day i started to notice that when i make turns especially at low speed my power steering is going out and its hard to turn the wheel. My fluid isnt low and the issue isnt always there, sometimes its easy to turn the wheel. So now everytime i go to make a u-turn i pray that it works! Im thinking this is probably like a pinched hose, or do you think its a problem with the pump?