blood on 2nd egg

by Jen

hi i have a sun conure. she has lay 2 eggs(infertilize) for these 3 days.
1st egg look perfect find but 2nd egg there is blood on it. what i have search from internet is that lack of calcium. we bought cuttlefish bone for her but she dont dare to eat.
anything that is new to her she wont touch.
we make the cuttlefish bone powder and pour some into her drink.
is there a danger for her to produce 3rd egg?
how should i clean her cage?