Last night I was injecting 2cc's durabolin and 1cc sust. No problems but when I finished and withdrew the pin there was an indentation in my thigh, almost concave, and it was cramped up. It was a very odd sensation. So I cleaned the site with alcohol, put a band aid on, massaged it and applied a heating pad. Seemed to work, the cramp went away. Has this ever happened to anybody else?