I think most of us have done the same thing - one thing I learned is to rinse the cut out with lots and lots of water - it's the same way with paper cuts, it's not the cut that is the problem, it's the LINT from the fabric or paper that gets into the cut and causes it to not heal quickly - so don't forget to rinse under running water whenever you have a cut from your rotary cutter or when you get a paper cut. And be careful so hopefully it will be your first AND last cut from the rotary blade!