Congrats,
and as for the odds of doing that you know that it is a .5/.5 shot at getting lesser/normal.
You then take that and multiply it by it self according to the number of eggs so in your case it would look like this..
.5(.5)(.5)(.5)(.5) = 0.03125
I think this is correct, if it is not please someone correct me, and hope that helps.