I recently read a very good book explaining the difference between men and womens thinking: Allan & Barbara Pease, Why Men Don't Listen & Women Can't Read Maps (you can get it on Amazon). Totally explained the difference in emotions, and that men are programmed as the providers and fixers, and women are programmed as the nurtures (goes back to our time as cave dwellers). Made so much sense, and gave me a great insight in how to deal with men!
Give a man a problem to solve, and he is happy. If he can't solve the problem, he feels he has let his family down. We all realise that most women don't want a solution to the problem, we just want reassurance, but men don't get this!
I really recommend you (and possibly hubby!) reading this book. It has helped me in my new relationship, and I hope it can help you too

Hubby is getting frustrated that you are sick and he can't do anything. Maybe suggesting ways he can help you (maybe if only around the house) will help him feel he is doing something.
I really hope you can sort this out

Love Emma.