If dreamed you that you have a heat, then in reality you pay to trifles too much attention, missing the most important in life. You need to get it together and to devote the life to important issues. To dream that at someone from your relatives temperature rose, means a slight disease any of them.
Be sure and keep any other thoughts out of your mind before drifting to sleep as a cluttered mind can decrease the chances that you will remember your dreams upon waking. Also, focusing on remembering your dreams upon waking in the morning is another very important thing. This sounds very easy, but is often hard for some to do. Interpret a dream by "dictionary dream of interpretation"
When you very first wake up, simply think about your dreams. Don't allow your mind to drift off to other things, just lay there and think about the things you dreamt about the night before - dictionary dream meaning.