Welcome to the site Katie
I'm sure one of the members who have had retention will get back to you. You could try speaking to one of the designated nurses on this site although I seem to remember they only do certain hours.
The anxiety wall you have hit is probably as a result of having to put on a brave face for so long. Eventually our minds and bodies respond by fighting back.
You need to find a way to switch off ~(much much easier said than done I know.)
Does the hospital your husband attend have a holistic/complementary medicine section where they do massage etc as that can be very helpful in helping you unwind?
Best Wishes
Sandra