This Friday 6/12 was my first time kegging homebrew. I completely sanitized and cleaned my corny keg and replaced all the rubber gaskets. I siphoned the beer in and set the pressure to 10 psi and put it it my mini fridge. I sponged on foamy sanitizer bubbles around all the connections to check for leaks and everything seemed good to go. I checked on Saturday to make sure pressure was holding and everything seemed fine and then today 6/14 at about 2200 I went to check on my keg and all my CO2 was gone and when i went to pull the pressure relief valve there was absolutely no pressure. I can't get my CO2 filled until tomorrow 6/15 afternoon and have no idea what happened. Do you guys think this batch is ruined if I let it sit for another day without CO2? Any ideas as to what could have happened ? Bad lid connection maybe?