Ok. I am doing 500mg/week sustanon cycle this is my sixth week.i started taking fina 2 days ago with 75mg/EOD. today was my second shot? my question is my left butt cheek always bleeds after i pull out the injection. I always check for air bubbles before i inject the substance. every thing goes smoothly but when i pull out the injection its like thick blood coming out. Its only momentarily .. but it scares the hell out me. for instance If it is vein how would i know and why only left butt cheek bleeds.There is no fina cough yet. If i only eject fina in my glutes do i have a chance avoiding fina cough????.