to the point where I needed medical attention? No
but heroin is also tricky like that, there is a very fine line between "nodding out" and being unconcious and turning blue. I have nodded out plenty of times, woke up face down a couple of times, nodded out sitting in my car in the driveway, all types of embarrassing stuff, but the way it is packaged where im at makes it somewhat easier to gauge how much to do and once you find a sweet spot it becomes almost second nature.
you will never realize youre about to OD either, I dont care how long youve been doing dope. You just remember feeling really good, than feeling a little too good, then you just kind of nod off and wake up trying to figure out exactly when you dipped out but still feeling pretty sedated.
the more I describe it the more sad it sounds but it really is a pretty sad way to entertain yourself especially if you do it alone. Snorting it isnt quite as risky as IV use although you are still more than capable of ODing