My (-) eggs went into lockdown this morning. Yesterday, during the last turning, I noticed a bloody, but hard knot had formed at the large end of the egg, just off to the side. This morning a bloody trail has appeared half way round the egg; not enough to crack it open... My husband tried candling it and told me he thought he felt a movement. So I'm going to leave it for now. Any ideas? Has anyone else had this happen?