I went to the doctor and found out I had cancer in my mouth but some how my brothers friend found that out before me
Dreaming about being diagnosed with cancer can symbolize deep emotional or psychological issues that you may be facing in waking life. The specific location of the cancer in your mouth could suggest difficulties in communication or expression. The fact that your brother's friend found out before you may indicate feelings of being out of touch with your own emotions or disconnected from those close to you.
Alternatively, this dream could highlight concerns about your health or fears of illness that are manifesting in your subconscious mind. It may also suggest a need to address any unresolved issues or feelings that you may have been neglecting.
Overall, this dream encourages you to pay attention to your emotional well-being and to seek support and guidance to address any underlying concerns or challenges in your waking life.