14 days ago I put 2 eggs in my still air incubator at 99.5 degrees (it was 99.5 and the humidity was around 53-56% at all times) and while one egg was infertile the other one was progressing fine. However since day 12 I haven't seen anything that could be called significant development as all i could see was a dark blob compared to others at the same day who cant see anything but the aircell at that day. I tried looking for a blood ring since one normally means that the embryo has died but I didn't see one.