I have two questions about pinning that I recently experienced. I am pinning 2x a week on my quads on the side. I rotate legs each pin. My first question is, why does my right side hurt to even begin pinning. I am pinning the same amount of times on each side? The left side is still smooth and easy. My 2nd question is, when I pinned today. I could see the area around the needle start to bulge? So I pulled it out and noticed there was a tiny bit of blood in the syringe. When I aspirated no blood went back into the syringe? Thanks for the help.