I'm so proud of you. I'm the same age and having this problem so young is so hard to address. Especially when you hear about people who drank for decades. We're the lucky ones.
I went through a medical detox about 10 days ago for 4 days and it was agony. The physical and emotional pain (mainly anxiety), plus getting moved around, was just so awful. I felt like I was living minute by minute.
My life has fallen to pieces since getting sober, but I am so thankful I am sober for it and all desire to drink in times of crisis is not in me. I can't sleep either, but my mom sent me some Valerian root extract she got from the store (herbal) and it's helped me get some sleep. That might work for you.
I am really, really happy for you. I hated it when people said "It'll get better" but honestly, it does.