Anybody With Any Ideas Please!!!

Im 19 years old and I feel im losing my mind. I was doing hard drugs such as cocaine or xtc but stopped a little bit ago and I feel I might have caused me to go insdie. I literally get so paranoid on drugs that I was able to kick the habit cuz I was so freakin scared to use again. But the worst part is is the state of mind has stayed with me. I get so nervous for nothing and so suspicious and people and things that I almost faint. I cant watch court tv because I feel that they are talking about my life. They talk about actual events in my life! I am freaking cracking oput of my school and im losing all my friends becuase I shut myself away in my apartment and rarely come out. Ive been off of drugs for a while but the state of mind has not left.. I dont understnad. Everyone speaks in codes. They imply what they mean but deont straight out and say it. I know this for fact though because it was finally exposed and it had b een going on for years but I jsut said I was being paranioid but a recent inicident proved I wasnt overly paranoid. To give one of many examples. My neighbors aparmtnet got robbed. Knowing of coruse that I didnt do it when she was telling me about it I had to cut the conversation short because I coudlnt breath thinking that she might suspect me of it and now she really might cuz I get so nervous about not looknig nervous knowing im looknig nervous. Im losing it!!