Hello guys I got another question, hopefully someone will have an answer for me, it would be much appreciated. I know your supposed to switch injection sites, but I've had horrible experiences with them all except upper glutes. So I switch back and forth every week each ass cheek. I've been doing this for a year. I've NEVER had blood in the syringe until a few weeks ago. Now....it's every week and I gotta move injection sites to a different part of my upper ass. Why all the sudden after a year is this happening? Thanks so much!! Cuz I feel it prob dangerous to inject into a blood vessel or vein or whatever is causing blood to shoot into the plunger. Thanks!!! 8)