Michele,
Yes, it is definitely OK for you to have needs, too! You and your husband are in this together. Life does go on. Someone has to pay the bills. Am in your situation myself, in MD. I've had to call my husband on taking his frustration out on me. Told him that I was sorry he had to go through it but that he didn't have a right to be mean to me, and that I would do anything to help make him better. Counselling can help, and so can behaving like there is a future for the two of you together.
This is a hard situation for both of you. No one has a future beyond today.
Good luck to you both.