He walked out on me and our newborn. ?

dont listen to these idiots. your heart hurts & thats normal but hes not good enough to be your bf or her daddy right now. i went through the same thing then i thought i got my babys dad clean we ended up getting married & having 3 kids together then i left him when i found out he was doing drugs behind my back for 8 years. your right to be upset about drugs. there could be so many reasons why hes doing this. ask him if he wants to stop & be a better father then find out treatment options & if not then you gotta suck it up & take care of that baby by yourself. yes i know it hurts & it sucks but honestly when you look at your baby you should see the motivation to be a better mom & it will happen. she is your strength & is what will keep you moving on. she needs you & you need her. it would might also be a good idea to talk to your dr about post partum depression. its very common but gets worse if left untreated. good luck hun!