bow hunting is tough, I have wounded a few for several reasons too. But you learn from your mistakes. When bow hunting if something can go wrong you can bet your ass it will.
some good advice I always tell people is when you get in your stand knock an arrow and draw your bow, if a limb is in the way you'll find out, or noises your bow makes, or even a jacket that makes noise.
souns like you know about piggies but I have to ask, you do know the vitals on a pig are way forward ? Like inside the shoulder forward. a quartering away pig is the best shot for a bow.