Save recovery

So yeah . . . . . uh I’m really frustrated with myself right now I uh had gotten pretty far into my project today and when I was going to finish and resume at a later time I accidentally pressed when I tried exiting the engine don’t save assuming the autosave function saves the project as it is and when I double checked to see if it saved it it didn’t now what I’m trying to do is find a way if possible to go back to when it had saved it cause I really don’t want to spend another 5 hours redoing every thing is there such a solution or should I swallow the sword and keep moving.