OMG !!! I was getting a headache reading this post. LOL. The answer to ur question: I doesn’t matter when u pin !!!! It’s not like the "stuff" is gonna rush right into the working muscle and have any kinda superior results. It doesn’t work that way. I’ve pinned in my delts and then an hour later did a delt workout. And no, nothing will ooze out unless u didn’t pin correctly or u used a friggin’ diabetic’s pin.