Fingers crossed

I'm sure all is well but I still get a bit nervous about contamination. Thurs. night I swapped out blow off tube for one of those liquid free better bottle airlocks. Went to work Fri morning, held over for OT and got home today and checked on my beers. The stopper had popped off about half way while I was gone. I was going to take a reading, but figured not to bother. I'm not going to keg them until next Mon anyway and I don't have any more yeast laying around. Just hoping no creepies got in the last couple days. Judging by the delightful aroma and the way the beer is clearing, looks like the yeast turned my wort to beer already and I have a somewhat inhospitable environment for nasties. That is all

If it was pushing out enough to pop the stopper, the chances of anything getting in is nil.