How can I tell if I accidently smoked heroin?

About 30 minutes ago I just went to take a hit of weed. Now I smoke alot, and thats it, but a ton, a ton. And it takes me alot before I'm satisfied. Well. I took one hit, waited a few mins to take another one, and then bam. before I did, I did not feel myself. I still do not feel myself. Im nervous and shaky, but that could be because i convinced myself im on heroin, and my legs feel weak. i just dont feel like me. Could this be from that? how can i tell if it was heroin or not?

ps. i am in a place with a junkie now, but i dont know if they are currently using, and i left my pipe out for a while....also its going away now but someone also woke up and im speaking with them, but i still dont feel normal, but less nervous.

The weeds not laced, I've had it for a while. The pipe also crackled once. does coke crackle? i know ill be ok man, but i want to know how i can tell what it was.

Sometimes weed can be laced with other stuff.....which is why you don't accept it from an unreliable source.

I think the fact after one toke you were out of it, its safe to say it was laced.

Easier still....dont do it.

Why do you have a computer on yahoo answers whilst getting high?

i dunno what you are talking about, i think you're high

dude it was laced with coke.....you'll be alright, just don't keep hitting it.

If there is heroin around and you're certain that what you're feeling is nothing like any marijuana high you've ever experienced, then there's a good chance that you have. I suggest you sit down and relax. If you're feeling uncomfortable, try turning on the TV or listening to music to try to ride out the high. Either way, it will pass.

Okay listen first off there is no excuse for doing any drug if you don't stop your going to be addicted if your not already and if you really cared about yourself (high or not) you would go to a place were they know about this stuff instead of Yahoo answers I am in middle school and I know this SO SHOULD YOU damn