I just bought this incubator for this lone duck egg I found. I am on day 9 of incubating. Lots of movement and kicking in there! So cute! The temp was doing fine up til this am. I woke to find it at 100 degrees when it had been set to 99.5 and had stayed there with no issues. I wasnt sure why it climbed to 100 so I manually lowered the temp gauge to 37.8C to lower the temp back to 99.5. It still going back and forth from 99.2 to 100. Why is this doing this all of a sudden? We keep our house at the same temp all the time. IS this temp fluctuation dangerous?