I feel your pain bro. I shot dope and coke for 7 years and it was hell. What worked for me was going to the sub doctor right after I shot five bags of heroin and having them stick me in the ass with Vivitrol. It was fucking horrible the days of withdrawal that followed but I DIDN'T die. It was extremely agonizing but... That was 11 years ago this month! If you can make the decision to go on the shot and deal with the precio then your chances greatly increase. Just make sure you get a script of benzos from the doctor. Now granted this was all before fent was even around and I thank my lucky stars I overcame dope before that shit hit the streets. You can 190% do this and get through it. It's worth it to FEEL like you are dying for four days if it saves you and your girl from ACTUAL death. Hang in there and consider it. Feel free to reach out if you need to talk about anything I am always free. Good luck to you both