Best wishes, Nermeen! If part of your question is about the legalities of coming into the U.S., you will want to apply for a fiance visa. (Actually, if I remember correctly, your spouse-to-be applies on your behalf.) Once approved, it'll allow you a one-time entry into the U.S., after which you have something like several months to get married. They're relatively straightforward to get approved, although they take some time.