I am in Atlanta so I don't know the area. Here are some listings I found on the internet.
Detox Facilities Boston MA - detox facilities, Boston MA residential treatment facilities, Boston MA drug addicts, Boston MA drug rehabilitation program, Boston MA alcohol abuse
Your situation is not unique. It is very common. It will be OK. Just stay in the moment. Don't think about tomorrow or next month. Do the best thing for yourself in every moment. Good luck to you. You are so young and your whole life is about to open and get better.