Wow I had never heard that for most people it takes weeks-months of daily use to become physically dependent ...maybe the dope I was doing was just really good or its just my brain chemistry or both but I was dependent w/in like a week of trying it for the first time, after 4 days of daily use ...yeah, it can happen that fast. Watch your back.
I remember my first withdrawal experience so well ...feeling like I was dying in a totally foreign way and wondering what the hell was wrong w me for hours, like half the day, before it occurred to me that I might be dopesick. I can recognize that feeling instantly now.
I remember swearing to myself that I wouldn't use it again until the withdrawals had completely passed, I didn't want to end up a junkie ...I think I ended up copping again w/in 12 hours of deciding that. I'm a junkie to the core and I think I probably always was, I just didn't know it yet. Heroin fills that hole inside me, it fits perfectly inside the dark voids inside my mind like a key in a lock. It makes me whole. And I still miss it every day and you can bet if I somehow ran across it I'd still be doing everything I could to get it in my veins despite not having touched it in over 2 years and being on bupe. Because now that I've experienced being whole I am so painfully aware of my empty spaces and will never not desire that feeling.
Stay the fuck away from heroin, it will ruin your life no matter what.