does or has anyone ever felt so depressed and not talked that much after turning 18 and/or got out of high school?

this shit is bothering me. I feel sad and shit and want to throw up and cry. Idk if its because I turned 18 and i don’t want to be, or if its that i just ended high school, or if its the fact that a really good friend of mine that loves me told me he can’t talk to me because the feelings he has for me… idk if its all of that put together but I can’t deal with this shit…