Your experience with your dreams is very interesting. It’s true that in the Bible dreams are a way of God speaking to people, and there are many examples of this. However, you need to keep two things in mind. One, the dreams in Scripture weren’t always for the purpose of telling the future. Sometimes God spoke to people in dreams in order to tell them what they should do. An examples would be Joseph the husband of Mary (Matthew 2:12-22). By comparison, the dream of Joel the prophet did concern future things, but this was more the exception than the rule.