I did something even more stupid!!  I have three eggs that made it to 18 days and were moving in the eggs, then no movement for the last two days and no pipping, vessels still seen but no movement.  I usually increase the humidity and don't touch once I see a pip.  So I decided to open an egg.  I broke the top of the egg and slowly opened it and could see vessels and everything looked fine.  I put a wet paper towel on it (no movement though).  I opened another and vessels still there and movement in side the egg, another paper towel and decided not to touch the third egg.  So I know the humidity is up in the incubator and no pips in the other egg, no peeping either and it is day 20.  I have to sit on my hands, but now I am afraid I killed the two.  No bleeding when I opened the eggs and no internal pips so fingers crossed.  Somebody please tell me I am not a murderer!!!!!