While pinning my twice-weekly dose of Test C today,I must have happened upon a vein. I aspirated before injecting as usual but, I accidently allowed the pin to move slightly out from the original depth position, then injected. I guess I hit a small vein because I had about a solid ten minutes of severe cough afterward. That hasn't happened to me for years--my glutes are normally safe from that sort of thing. But,it sure as s*** happened today.
I forgot how unpleasant this can be. Also went through some paranoid thoughts about having a pulmonary embolism. Has since passed and all seems well now. But, will be doubly careful going forward.