Should I become a nurse? (READ DESCRIPTION)

My soon to be husband has a rare form of Lupus that is causing his immune system to eat his organs away. The doctors say he will not like to be older than 27. Should I become a nurse so I’m prepared to take care of him? His doctors also told me I should prepare to take total responsibility of him around 25, because he will most likely be a vegetable by then. I’m a VERY squeamish person, but I was planning to be a nurse for a while anyways and later decided I couldn’t handle it. However, I want to be the one to care for my husband when he’s sick so becoming a trained nurse seems like the best option for me. I would love to help save people as well. I’m just wondering if it’s something I really shouldn’t go at or if it’s just probably not going to work out.