Hi, I'm new to this and wondering what I'm looking at in our egg. When I candle I see a dark mass that moves when I move the egg. Like its floating with some tiny bubbles along with it. I'll try and get a pic. Its day 3 and it looks a little larger than on day 1, but don't see any veins or anything. Should I just wait a few more days or consider this an infertile egg? Thanks!