The fact that you emphasize having 'complete control' is a huge red flag. By the way, small binges like that are very risky as opposed to sporadic one-time usage. Easy chance for an extended stay going on those runs, and it already goes to show that you are chasing the feeling.
I agree with most everything that's been said and I think the OP is deluded - but also to be fair many people have been in the same spot, it's really hard for a deluded mind to listen to helpful advice, and they might just be pretty clueless about how addiction works. It's almost funny how easily predictable it is though - that this person is very likely to become an addict, but probably is blinded by the risk entirely. It always starts off innocent enough. A chipper is an addict waiting to happen, especially if they enjoy opiates over stimulants. You already said you used more because there is something you couldn't handle (depression, which happens to be exacerbated by opiate withdrawal). Perhaps this is a subconscious cry for help before it's too late, or maybe you are looking for a confirmation of what you already know to be true. I wouldn't consider this "dark side" material by the way because there isn't any suffering or torment, just a big problem waiting to unravel if the addictive behaviour is not acknowledged and abruptly stopped.
In fact, the addiction is so incredibly miserable that even if you have all the willpower in the world, which is tough to self-judge, it's simply not worth the risk of losing your life and dying of drugs and all the bad things that can happen. Arguably you have a greater risk of death because of your low tolerance from not using regularly, further making it not worth your while. The addiction comes on very slow, in fact I didn't encounter serious withdrawals until after two years of heavy daily use, which was for chronic pain so it was truly habitual.
You're already addicted in my opinion. It's pretty arrogant to do heroin a few days in a row for just a few months (very inexperienced user) and already boast about how you have the control to master it, and the willpower. What the fuck? If that's truly what you think, you are in for a life lesson my friend. You will get stomped on by that drug if that's what you think, but go ahead and prove me wrong, we'll talk in a few years. Most nobody who enjoys it has any control until they see the consequences which can take years to manifest, and even more time to resolve. You are a new user. Fresh meat to the dope monster. 5 months is nothing if you only used a few days each month and look, you already broke your rule. Even if you used every single day of those 5 months, you might not have serious withdrawal yet depending on the dose. And you might still think that you are in control, because admitting that you're not means admitting that you have a drug problem that could potentially escalate very quickly to something beyond your wildest dreams.
Of course you are going to think you're in control for a while, otherwise it wouldn't work. It's only a matter of time. My first gram of heroin lasted 6 months. If you are using 1.5 grams in a matter of days, it's honestly just a disaster waiting to happen. Would you walk away from it? To me, it sounds like you never had willpower to begin with. What about skipping this month... or this year? How would you feel about that. Or never using it again. You wouldn't do it I bet - because after all, you're in control. There would be no reason to do something like that. After all, you only have your whole life to lose, and a silly high to gain.
Many more people have been in your situation and gone on to become addicts than not in my opinion. Hopefully if enough people recognize how risky your behaviour is, you might begin to recognize it yourself. Scolding yourself and admitting a 'small defeat' isn't go to do shit when you're up against this beast. That's not willpower.
