I injected yesterday in my quad above knee, it was very painful and I remember tasting the EQ I believe and I had a little cough. That means I hit a vein, maybe went thru a vein. Now theres this nasty black n blue area about 3 or 4 inches long and a inch wide, near where I injected. Do i need to worry? is this just a vein that died? Thanks guys, this is my first week injecting.