Please help with my anxiety, depression , ocd :/?

I've had depression & anxiety for about 5 months since my first panic attack , for what I can tell you what the causes where , i was stress out a lot but i was never depressed and sad , i was a happy teenager , out going and living life good with no regrets, but two years ago my father passed away and we were really close life went down hill , and i had a girlfriend whom was my best friend for 4 years since middle school who knew me very well and always had my back , at the time my father passed she was still my girlfriend and she was there through out everything , but we ended up breaking up , I started to get stressed but i was like you know move on . Things got better but I started as alot of teens do experiment with drugs , I started smoking marijuana then cigarettes , then doing alot of dumb stuff hurting my mother , who cried every night because I acted a fool and didn't go home and got in trouble with the law, and then one day my friend wanted to give me Ecstasy i refused because i thought pills were bad , but then he was like just do it once , and i took one , and i wanted more for about 1 year I partied crazy I took about 300 pills or more & got in alot of trouble , hurt my family & friends , then one night August 2010 I had the worse panic attack that lasted 4 hours I even went to the ER for it , then I went sober and was suffering with anxiety , then that led to depression , i was getting help and feeling alot better , feeling you know happy again , was out going even tho i was depressed and good off drugs, then one night i had to urge to take Ecstasy again then I did it about 15 more times, and then had another panic attack, i quit everything , done , and then life got better for me and went to counseling & was seeing a psychiatrist , but i stopped going because I felt better in life I was happy , but my psychiatrist told me to come back , but I didn't listen, & I controlled my anxiety and for some time It was gone , then I got into trouble , went to Juvenile Hall , and my anxiety was pretty much something I myself controlled & my depression was getting a little better , I went to a psychiatrist while i was locked up, and when i got out i was happy , still had anxiety and depression was getting a little better, but I just let it be. And im making my mother happy , going to school, getting good grades , trying to do good in life, but about 4 weeks ago bad thoughts started going in my head out of no where , like death , disease, unwanted sexual thoughts ,just really disturbing thoughts, and this is the worse I ever felt in my entire life , anxiety went over board, i can't sleep , and when i do sleep i wake up and i can't go back to sleep , this really hurts its in my head everyday and i can't get it out i did research and did a test on OCD and it says i most like have OCD, and for the first time ever , i thought about suicidal thoughts and NO i know im to strong for it , i got family , i got friends , i got a good soul, im changing to a better person , but this OCD gets my mind going crazy , im just asking to people just like me , is there hope ? Im seeing a psychiatrist earlier today and im going to see them for a while, does anyone have any success of treating this , it makes my life miserable, I pray everyday , & i tell myself im to strong , im going to be better one day , it helps , but im just asking what should i do , helpful hints , or personal stories of getting better , i don't want these thoughts , im only 16 still young , & btw i am going to refuse the pills the psychiatrist give me please help out , thank you and god bless. <3