I Feel Quite Attracted to Alcohol and Some Drugs, Is This Normal, or May I Have a Problem?

I am almost 19. I’m a senior in high school.

I’ve drank before, but now I would almost say that I yearn for it, for lack of a better word. I’ve quit taking my prescribed Adderral for the most part, because I’m joining the Navy and know it’s a dis-qualifier, like many of my other annoying attractions atm. Now I find myself mentally attracted to pain pills, marijuana, and for some God-awfull reason Cocaine. Out of the previous 3 that I mentioned I’ve only actually tried pain-pills btw.

Just because I feel the need to clarify that I am not a junky, or at least that I feel I can still say that for now. I never want to try Heroin, Crack, Ice, Meth or/Crystal Meth(if there’s a difference), or similar highly addictive drugs.

To re-iterate, Is this Normal for someone my age or may I have a problem?
I just want to thank you all for being so supportive, yet corrective. I don’t plan on just letting myself keep going down the path I’m on no matter how brief I’ve been on it, and I guess my plan is that if I can stay clean till march my career in the Navy will do most of the rest. It’ll at least give me a good start(no access), support system, and some real/independent confidence and purpose.

For possible new answers, Don’t stop…
OOPS. When I said march I meant October, not that it means much other than more time to test and practice being self-sufficient, and independently clean for the rest of my life(hopefully).