Twang, I somehow doubt you're going to come back to this thread, but please please please be careful when using fentanyl. Too many of us here on this forum have had loved ones pass because of using this substance. It's incredibly strong. You realise that 10mg will more than likely kill you? Also, fentanyl is mostly for high-tolerance pain management and really sucks for recreational use -- there's little to no rush and it's very hard to walk the line between euphoria and death, and there's little euphoria to be had from fent anyway. Tricomb is right, too. Unless you're a professional, and the odds are you aren't, it'd be very easy to get a bit of powder with a higher than normal concentration and kill yourself. I wish fentanyl didn't exist, honestly. It's responsible for the majority of pure-opioid (non polydrug) overdoses as far as I know and really isn't worth it unless you are using it as prescribed by your doctor or are incredibly careful.
Please don't proceed, but if you must, be careful. If you're going to do it, then PLEASE have someone with you who can dial the emergency number if or more likely when you need to be pumped with naloxone. I hope you come back to this thread, as I'm going to be worrying about you until you do. That's something I hate about this forum sometimes, I swear I'm going to get an ulcer from threads like these.
Please be safe,
-OCD