As a teenager, it's bound to happen that you would have sex thoughts/dreams. I would consider this to be normal. Desire, curiosity, frustration, hormones, body changes...all these things are affecting you at this stage. The dreams also give a message; intercourse represents a potentially creative act. People symbolize aspects of your personality. This dream is showing how you are looking to see what you can do with yourself...who you are and who you want to be. The oral sex aspect indicates doing something in life just for fun without really expecting anything out of it. It is during the teen years that we begin to experiment with our personalities, trying new things. Look at your life and see how you are growing in your body, your mind, your experiences, etc. Try, as much as you can, to make good choices. God bless.