Re: If I want be a nurse.
Take plenty of Math and Science!
Nurses have to have an understanding of biology, of course, and some chemistry and physics too. Nurses are also responsible for administering medicine and keeping track of a patient's pulse, blood pressure, and other vital signs, so they have to be competent with numbers, also. (Not a math genius, but competent.)
Why don't you look into some nursing programs near you and find out what the requirements are.