I brewed a RIS and did a 2 step starter for it. As I was pitching the yeast, I happened to catch a bug (maybe a fly) fall into the beer that was definitely dead already. It likely got into the vitality starter that I created about 6 hours prior to me pitching. Since the beer is a RIS and is pitch black, I can't seem to find it. Do I have a problem? Has anything like this ever happened to you? I'm sure that this happens all the time at breweries, but just never heard of it.