Transient Ischemic Attack Victim

I am a mother of two and I had transient ischemic attack last month. Because of financial difficulty I had to go look for work, unfortunately the work that I've got is for night shift from 10 pm to 6 am. I find it very hard to sleep during day time but I'll try my best. My relatives told me that I shouldn't be working that time because it is bad for me and that I would be more prone to another attack. They advise me to just wait and look for another job that is on normal hours. Please advise me on what to do, I've got work tonight, I need an income but at the same time I don't want something bad to happen to me, I don't want to leave my family. Thank you for your time.