I was pinning today. Don't want to bore with details, but it was 2cc in my left thigh. Same way I usually do it... then I pull the needle out and blood starts shooting out EVERYWHERE. It was a good 4-8 oz before it stopped. I aspirated and everything, no idea why it happened. Some stuff online said I must have went through a vein? Maybe an artery? Everything seems fine now, but there is a tiny bit of swelling right where i injected, it might be gone now. Has this every happened to you guys? Should I be worried?