19 years is too short to see this beautiful world! I can assure you your stutter will get better. How can I assure you that? Because i went through your situation when i was 16. Now i am in my 40s and i am doing good in life. Do i still stutter? Yes i do. Its a lot less than when i was 16, i keep on working on it. What can you do at this moment? Talk to people. DM me if you are ready. I am not professional speech therapist, but i am expert on my own stutter. Ask for help, there is help available. And you will find help when you start seeking for it.