Yes, these problems can be indicative of something bigger. You are obviously intelligent enough to know that something is wrong and that these experiences you are having are not typical. Being emotional and moody might be “normal” for adolescents but seeing and hearing things, and feeling suicidal, is not.
It is time to get professional help. I highly recommend that you be evaluated soon by a mental health professional. It would be helpful to print out your question and take it to the appointment with you, just for extra detail. I sincerely hope that you feel better soon so that you can enjoy your teenage years.
All the best,
Dr. Holly Counts