Seriously?? At this point I would advise you to put down the saw and hier it done. If you look at your chain their will be two or so lines on the top of your cutting teeth, use them! Let's you know the degree and where of your chains teeth. But by all means, buy a new chain for every use!! Please buy it from the shop that takes care of you though, not the depot or the like..
If you spend 10 dollars once a month for a sharp chain it's $120. Buy a new one it's $172 plus, math is simple