Ps3 won't load my game GTA 5

Why does my GTA5 game Just sit there and load and Not go to where I can play. I've played it before. I moved. Packed up my ps3 it Sat for 4months. Than I HOOKED it back up to play again. Then it just sits there and loads and loads like hours. Never goes past that though. WHY? WTH IS WRONG WITH IT? (HELP)