While grocery shopping and returning home, I had a piece of meat (steak, flank) that was out of its refridgerated condition for about 30-45 minutes. Is there any potential risk if I cook and eat the steak? Normally I try to get the meat very last and return home immediately so that it is only out for 15-20 minutes. It was an overcast 55 degree (F) day. Am I just being paranoid?