i have had 2 hatch on there owen and this morning my husband had too help 2 out of the shells and 1 has pipped since 7 this morning does anyone know how long it will take all 12 eggs to hatch i am on day 20 of the eggs being in the incabator and know it usually takes 21 days but how many days after the 21st day should i wait after the 21st day to dispose of the unhatched eggs