I just bought my first keg and put a pale ale in it the other day. I left it at a friends house who does not know much of brewing. Well I came back a few days later to find that there was a leak in the gas line. I pulled the release on the top of the keg and no CO2 came out and on top of that the brew store was closed for a few days and that's where I get refills. Is my beer ruined now that it has sat for 3 days without pressure?