I have a clicking in my left shoulder when doing push ups, should i be worried? is there anything i should be doing to fix this issue?

Depends: If it doesn't hurt or lead to difficulty or pain when moving the shoulder, it may simply be "normal." clicks can be caused by several different processes, and if there is pain involved, you should hold off on the push-ups for now and see a medical professional at your earliest convenience to make sure the bones, muscles, tendons and ligaments of the shoulder are all ok.