I think I'm neurotic.

Hello. My name is Simon. I was thinking before to post about my problems on forum, but never had time or courage to do it. Today is the day. I always have problem to write about myself but I'll try my best. I don't know how to start. I am 23 years old. I used to study on Uni but left it after 2 years and now working from one place to another. I have problem with overthinking, stress, blush, anxiety. I think it has started when I was 15 - 16 yo. Almost everyday before school I had hunger pangs. Nowadays before important day for me I can't sleep and next day morning I have strong hunger pangs. I can't really fight with that. For example when I am flying somewhere, I love exploring and traveling but somehow I can't eat anything. I used to work in some peaceful farm for few months. Everyday looked the same, without stress and problem was gone but now I am back in big city and ... The other problem is overthinking and anxieties. Let's imagine situation that you are sitting with your friends and someone will joke that I am thief, gay, pedophile or anything. I know I am not any of these but I'll blush immediately and make stupid face expression. The other problem I have is that whenever I'll go out for clubing or anything I need to get drunked or use narcotics to talk with other people or get laid. When I am sober I am just standing and I am scared to talk to anyone. If any girl will ask me anything, like where is the toilet I'll blush... I think I don't have depression or anything I just overthinking eveytime. On stret, in bus etc. When someone is looking on my I always think that I did something wrong. I also can't look into ppl eyes when I talk with them. I would like to ask if you know any healthy medicines to lower my stress and anxieties or should I try some therapy. I know my post is chaotic but English is not my native and sometimes I don't know how to describe things. Have a nice day everyone. Peace.