This is pretty bad, you lose your husband and then develop breast cancer on top of it:

Research findings from a Queen’s University study have for the first time uncovered a possible biological link between severe psychological stress and an increased risk of developing breast cancer.
The study, led by biochemist Christopher Mueller, found that the stress hormone hydrocortisone may repress the activity of a tumour-suppressing gene known as BRCA1 that is related to breast cancer.

Previous population studies have shown a relationship between the experience of intense psychological stress, such as that associated with the loss of a spouse or loved one, and an elevation in breast cancer risk. However, this is the first time a breast specific biological basis for this link has been proposed.