apparently I'm going to go against the main flow and suggest that you don't need to be asking us about advice for drugs. It doesn't sound like you have any reason to desire to take drugs. Except maybe an anti-anxiety drug that's probably best to get from doctors anyways (covered by insurance at least).
It sounds like you don't like your mind or body to undergo non-standard sensations. That's what drugs do, that's what any altered state is, if that makes you anxious then don't do drugs...

I mean, did I miss something? It's possible, because I can handle altered states, and actually use them for mind-expansion. Or at least, that's what I tell myself. Anyways the bottom line to this paragraph being that I'm high right now, and might not have understood what you were asking.

Man this post seemed to take forever. And yet it shows up all at once...

Oh yeah, so in conclusion... just don't do drugs