Ok so I pinned my delt about an hour ago... Same ol routine, pinned, aspirated, injected, withdrew. When i aspirated it was fine just little bubbles coming out the muscle no blood. Right when i withdrew the needle dark red blood started gushing out. Wtf? Did i hit a vein? In my delt??? Why didnt i see blood when i aspirated? Im just worried i may have injected a vein. Its been almost an hour now and I feel ok, just a slight numbness. Anything to worry about?