[joyfull]

any blood inside an egg is usually due to the hen suffering a shock during the process of producing the egg.

[Geo]

I have 2 black that lay, only 1 has laid right through the winter the other has still to start again. They are both 2 years old and i'm hoping she still has some eggs left

That her started laying again millie :lol
Can you post some pictures of your hens and we could maybe work out how long you may have to go before they lay.