No one likes to poke their finger with a pin (or worse yet, sew over their finger), but it is so much worse when your blood gets on your fabric! I’ve found my words get less and less PG the bigger the mess. The best way to clean it, spit on it. Your spit gets out your blood. I’m sure there’s a fancy scientific reason that this works, but details aren’t important. It works.
Save the fabric!